Apex Legends, Destiny 2, any CoD or really anything competitive. Far Cry, Forza, anything VR.
I don’t play enough single player games anymore to really have a specific example on hand, but every time I’ve tried to get gaming working on Linux I give up after 3-4 hours of tinkering on a AAA game.
Linux support is better, but it’s not perfect, and there’s often trade offs made to be able to play on Linux.