I switched from Windows to Linux last year. I'm typing this on Ubuntu 25.04. All the games I have ever tried to play work, and work well, with very few exceptions.

Steam just works, all I had to do was go into its settings, the Compatibility, and enable Steam Play for all titles. I set the default compatibility tool to "Proton Experimental" and haven't needed to change it. Even for the titles that say they don't work on Linux.

Heroic Games Launcher handles my Epic and GOG libraries, and again, everything just works. Epic is not friendly to Linux users, and the only exceptions have been a couple of free games on Epic where the developers have gone out of their way to break Linux compatibility. Red Dead Redemption is the only game I would like to play, but haven't figured out how to get it to work. Most of my Epic games work, including complicated ones like Train Sim World 5. All of my GOG games work without exception.

I use a program called Bottles to handle edge cases. It's a little trickier to get set up, but once you've got it running, again, stuff just works.

Hope this is helpful. I'm happy to answer questions.