With the advances in gaming on Linux in recent years, it is so tempting to switch full time. I would absolutely love to, but I am a Game Pass Ultimate subscriber and it is where I play a lot of my games on PC. I know you can use the cloud version, but I cannot stomach streaming games in their current state, so it is a no go. A large portion of my Steam library is compatible, but anytime I have done an install I end up giving in and going back to Windows for games.
I’ve been Linux fulltime for years, settled on Pop!_OS for it’s excellent NVIDIA graphics integration. As far as game compatibility goes, check your games on ProtonDB. Even if they don’t have a Linux native version, the Proton Compatibility Layer may let you play your “windows only” games on Linux without streaming.
This doesn’t apply to gamepass. The gamepass app uses UWP, which isn’t supported in any way on Linux.