I just switched my home PC last week. It’s kinda funny how Steam games are a roulette of support, but it’s been really fun thus far.
Was surprised that the government app I have to use is actually open source and on the AUR.
Can’t fully drop Windows sadly but definitely minimize the usage as much as possible.

I’ve had good luck with steam games, although I mostly play older titles these days and not online multiplayer.

I was surprised that Crimson Desert works out of the box (and I think even loads faster than on Windows) and also that RE:Village doesn’t work (it runs but crashes)

ProtonDB is a powerful tool to take guesswork out of the equation.

I do use ProtonDB (esp. for my Steam Deck) and like it a lot, but, we have a saying in German “Probieren geht über studieren” :D