It's multiplayer games with anti-cheat that are the ones not supported (with developers now having to go out of their way to turn OFF support for Linux); everything else works fine. If you're only into singleplayer (like me), games often run better on Linux.
To expand on this and provide some examples, I've recently played Wuthering Waves, Tower of Fantasy, The First Descendant, Phantasy Star Online 2, Black Desert, Lost Ark, Throne & Liberty, probably others I'm forgetting, all of which contain anti-cheat of some variety and all on Linux.
There are some that don't support Linux and likely never will like Valorant or Call of Duty, and even fewer that dropped Linux support like Apex Legends.
Mostly mobile ported gacha and Korean MMOs. It's good that it runs on Linux for you, but most people don't play these games. Most people are interested exactly in the ones you've listed as not supported.
