Some desktop environments (plasma 6 at least) support it when running in Wayland - my daily driver for months has been an HDR setup (with a nvidia gpu, even) and it’s been great. It’s not quite ready for non-technical users, but imo it’s not far off and I can’t wait for it to be more common.
Multiplayer (competitive?) gaming in general is pretty poorly supported on Linux. It's not necessarily Linux's fault: it's enough to deal with one OS's loopholes as an anti cheat developer, let alone two or more; but if you happen to actually enjoy playing games like Valorant, League of Legends, PUBG, Counter Strike or basically most of the big names, then, unfortunately, you don't really have a choice.
I've been waiting for the (nearly?) full compatibility of multiplayer games for 20 years. I would love to solely use Linux, but I'm afraid it's not just HDR or music production.