The reality is that security/privacy will always be a balancing act with convenience.
If you increase your security and privacy, you will lose convenience.
If you increase your convenience, you will lose security and privacy.
It's always a tradeoff.
It's up to you what things you're willing to trade off, in the end. Everyone can give valuable input, but it will always be up to you to make the final decision on what level of tradeoff you're willing to accept and what level fits your threat model.
For total security and privacy you would basically have to not use electronics at all and live in a cabin in the woods and have a good grasp of chemistry, scavenging and farming to take care of yourself. I think a guy named Ted did that once and it didn't work out so great for him, but of course, he also didn't actually just keep to himself in those woods.
And to be fair, these days even that's not a guarantee of total privacy with satellite imagery, drones, etc.