I just made the full switch from windows to Linux Mint a few weeks ago after one of the many windows bugs hit me and I lost all my files. I'm not a huge gamer but I game.

So far I've only run into one issue and I think that has more to do with the program being 25 years old than it being a Linux issue lol. Everything modern has just worked with no crazy steps to take ahead of time. Granted I don't play any games that have anti cheat built in so I can't say anything about that.

Edit, It may help you to know what games I've tried so far. I'm only 3 weeks in so not many lol. Sims 2 (one of the programs for it is what's giving me an issue not the game itself), Stardew Valley, Grounded, Grounded 2 and, I've loaded Ark but I haven't played it. I have the EMERGENCY! Series in my library as well as Alice Madness Returns but, I have not installed them yet. I have several other games I'll eventually get around to installing but, I go in waves of what games I play.