Recently, i had to move from nixos to windows against my will simpy because of anti cheats. While i dont game that much, the few games i enjoy playing are all online with some kind of anti cheat. I used to dual boot but i was tired of having to wait for my slow hdd to load windows (i only have one ssd). I literally used linux for everything else but because of anti cheats i am forced to move to windows. I managed to make it a little better by using wsl2 and removing bloatware but it will never be the same as linux
With the exception of the false positive ban wave reported a few days ago, Apex Legends has played flawlessly on Linux for the last couple of years. According to comments on protondb, Fall Guys also appears to be working fine, including multiplayer with anti-cheat. I’m not trying to tell you that you shouldn’t run Windows if you want to, but perhaps you didn’t fully explore all options?
If you switch back to Linux you could suggest Shatterline to your broke friends. It’s f2p and had no issues with anti-cheat last time I tried it. I think Overwatch 2 is also f2p.