I don't know how it would be received in Spanish culture, but in the US this is common. I know several people with Chinese, Vietnamese, and Polish names who have either adopted Anglo-American names, or changed the spelling and pronunciation of their name to make life easier. In my opinion it's not a big deal. Also, it's fun when you get to know someone well enough to learn their "real" name.

I asked myself the same question when getting US citizenship (also born Polish). Ended up not changing my name (although in English few letters aren't exact, like using L instead of Ł). I don't mind showing my ID, but just like you, people still manage to mess it up. It often ends up being a starter to interesting conversations, which personally I've enjoyed. Having a real unique name can have an advantage - I've never received a bill that wasn't actually for me, unlike my American friends with common first name/last name combinations.

Nice to meet you, Gregório Felipe. 👍

Yes if it feels comfortable to you and will make your life easier, change it.

I had my name legally changed in 2018 to something I feel more comfortable with. Love it. No regrets.

Yeah that name makes sense. Is that surname to combine with the name? because it doesn't resemble your Polish surname. I think "Gregory Filipo" would be closest to your Polish one

That's a personal decision. You could list the pros and cons and then take a decission.

I think you can use Gregorio for your daily life (probably you already do that) and sometimes, when you have to do a legal operation, be patient as until now.

I'm a 100% Spanish person and I have the same difficulties as you! Mi name and surname are Basque (a language spoken in Spain, but different to Castilian Spanish; there are millions of Spanish people with Catalan names too + all the people from Europe, etc.).

Every time I have to spell my name or my surname (or both), I do it. And personally I have no intention to change them. My name and my language, as my family and my history, are important parts of my identity, and I'm proud of them. I'd recomend you to do the same, here in Spain and in any other place of the world. Also to speak Polish to your childs if you ever have any.

But as I said before, it's a personal decision and if the legal stuff you have to do sometimes are a real problem for you, change your name. Just be sure that you will not regret later for giving up a part of your identity.

Is it possible to do a Spanish spelling of your current name?

Seems reasonable to change your first name to make your life more convenient, but unless people encounter these names, they'll never used to saying them.

In the UK it takes knowledge to know how to pronounce Irish names but one you've met a few Siobhans and Eoins you get used to it.

There is an element of historical oppression here though. Some people choose to use an Irish spelling because, well, the English keep trying to erase other cultures. That example didn't work out as well as I thought it would.

As someone who doesn't speak Spanish at all, you could espanify your last name so that your name would be

Gregorio Filippo, or something similar?

How about using your Polish nickname (surely you have one?)? This would likely be easier to spell for the average Spaniard, while staying closer to your identity than going full "Gregorio González".