Depends on the games. If your kid wants to play anything with kernel level anticheat, it will not work on Linux, period - these anticheats don't support Linux,

Depends on the games. If your kid wants to play anything with kernel level anticheat, it will not work on Linux, period - these anticheats don't support Linux, and either prevent the game from running altogether or disable certain online modes. Otherwise, CachyOS is extremely popular these days, and I suppose a valid choice.