Most games "just work" at this point because of how well Proton works: https://www.protondb.com/
The biggest issue is certain DRMs aren't supported in Linux yet, but others are, so it's just game dependent. I mostly play single-player, but the multiplayer games I do play work fine.
I don't have Windows on any machines at this point. I've converted everything to Fedora Silverblue and it's fantastic.