Within Israel, the vast majority of people don't particularly care about any kind of manifest destiny style reclamation of the West Bank or Gaza, and if that were the only issue, I genuinely don't think there would be a significant problem.

What essentially everyone does care about, however, is repeatedly having rockets lobbed at them. When people feel under threat, reason starts to fall away, people begin dehumanizing the "other", and you get the massive mess we have today. The fact of the matter is that Israel will never accept any situation where its people are under threat. No matter what you think about what acts are or aren't justified or your opinion on how various parts of the history played out, none of that changes this basic reality.

Palestine is not going to be able to militarily eradicate Israel. There is precisely zero chance that Israelis allow themselves to be subjected to a second diaspora and they'll fight to the death to prevent this, and that's to say nothing of external players like the United States. Again, whether you think this is a good thing or a bad thing, it is a true thing.

On the flip side, Israel is perfectly capable of essentially eradicating the Palestinians, though this would subject it to massive international condemnation that would also have huge economic impacts. You're already beginning to see whispers of this as the world increasingly sees Israel's response in Gaza as being excessively harsh. The most they could do is a slow and steady degradation of Palestinian society while encouraging them to "voluntarily" leave, which is arguably what the strategy has essentially been under Likud with settlements and the like.

So, what's required for a peaceful co-existence? Firstly, you need a mutual acknowledgement from both leaders (and also, a legitimate Palestinian leadership in the first place) that the other side exists and has a right to do so, ie, Palestinians giving up on the idea of eradicating Israel and Israelis giving up on the idea of fully annexing and ethnically cleaning Palestinian lands. This is not a trivial thing. The Israeli far-right, though they're not dominant, are growing and believe they have a divine right to the West Bank, with the Arabs being seen as little more than animals in the way. The extreme Palestinian side is that all Israelis are essentially foreign invaders and should be forcibly removed or killed. Both of these positions must be completely taken off the table.

Secondly, Israel will not engage unless it is confident that its security will not be threatened, which will in practice mean that Palestinian authorities must be de-militarized beyond what's necessary for basic local law enforcement. Again, this might seem unfair, and hell, it probably is. But the fact of the matter remains that Israel is the side holding the guns here, so you either play by their rules and try to find some positive outcome, or you flip the table and enjoy the complete loss, but with some moral satisfaction. Similarly, there would probably need to be some kind of border controls for imports that Israeli authorities can inspect for covert weapons shipments, since it's a known thing that Iran does regularly try to bring weapons into Gaza. Ideally, this would be some kind of bi-national force with Palestinian cooperation.

If you reach these points, then you still have other very big questions to deal with, like precise borders, land swaps, the question of Jerusalem, how to connect Gaza and the West Bank, any right of return for displaced Palestinians both recently and during the Nakba, and plenty of other things I'm sure I'm forgetting about. But ultimately, if you have a Palestinian and Israeli leadership that are actually interested in peace and accept the existence of the other, and both agree to cooperate on matters of security and prioritizing that peace above and past grievances, no matter how legitimate, that gives you a real foundation you can build from.

I wouldn't get my hopes up though.

The simple answer is, realistically, Palestine can't do it alone without help. Some other country will have to step up and get involved.

Currently, even the countries who don't necessarily back Israel aren't interested in helping Palestinians, including major Muslim countries in the Middle East.

It could have something to do with the history of Jordanian Civil war, which was a war between the King of Jordan and the Palestine Liberation Organization. Islamic countries like Jordan and Egypt haven't exactly been stellar friends to the people of Palestine ever since. (Whether that position is justified is up to you to decide, I am not here to argue whether it is good or bad.)

So unless things change somehow, they will likely not gain their freedom.

Realistically? Unless the international community (or the Muslim world) have a change of heart, the Hamas way of "get Israel to broadcast their atrocities to the world as loudly as possible) seems to be the best bet currently. A direct war of liberation is impossible because of the blockade, but at this rate the international community might actually give Israel the Apartheid treatment in two or three decades.

Probably give them Madagascar. I'm sure that will solve it. /s

It will really take a global effort. I don't think Palestine and Israel can be disentangled at this point. It's really just about accountability for the Israeli government at this point and increasing Palestinians presence in governing.

There's no realistic solution right now. The stronger will always dictate the term of the possible solution and the weaker won't accept that and will keep fighting.

The support of Israel in the USA becomes a partisan issue.

We are already seeing division within Democrats for supporting Israel, with younger people mostly anti-Zionism. Likely with the next Democratic President and possibly because of Israeli meddling in supporting Republicans, the USA drops its veto of Palestinian statehood. At this point, Israel likely gets very cagey and may try to start a war to expel all Palestinians, but that act of aggression will be met with a response.

Realistically?

They can't. Not without a major change in American politics, which is unlikely given the amount of lobbying power that Israel has, and the grip that Evangelicals have on right-wing political power in the US. Anti-BDS (boycott, divestment, sanctions) laws intended to prevent people from protesting Israeli policies by cutting funding to the country have passed in nearly all states. We can see, with the way that current events are unfolding, that even expressing support for the Palestinian people is resulting in people being labelled as antisemitic.

(For reference - Evangelicals support Israel as a Jewish apartheid ethnostate because they believe that the Jews need to control Jerusalem and Israel in order for Jesus to return. It has nothing to do with Evangelicals liking Jews, which they mostly don't. If you don't want to believe that, I can certainly help you find sermons from megachurch pastors saying precisely that, but I generally try to avoid listening to that trash.)

We're very slowly starting to see that kind of change now, with the way that the youngest generations in the US as more supportive of the Palestinian people. But it's not likely to mean much, since by the time they have enough political power to do anything, Israel will have completed genocide.

Realistically, it can’t.

There really is no other solution than stopping the attacks and trying to establish diplomatic connections.

Seems very unlikely. The most likely way is if Israel gets annihilated, which would require also destroying the US military capacity. Absolute horror and possibly ww3 is the only way.

I think they probably have to leave. They've been treated horribly, but there is no hope on the horizon as far as I can see. Israel is cursed, Gaza is cursed.

By not killing civilians maybe. By engaging in actual normal warfare if it insists it cannot achieve success peacefully. By not encouraging persecution around the world or siding with nations such as Russia and North Korea. By respecting human rights within its borders. Can't be too much to ask.