Pasting my comment here from another on this thread.
I've been using Cachy OS and Marvel Rivals, Deep Rock Galactic, Deep Rock Galactic Survivor, Crusader Kings 3, and UFO 50 have all worked out of the box including multiplayer. Turmoil and Helldivers 2 required a "tweak" which was switching back from Cachy's version of Proton to the default Steam one. (Turmoil had minor graphical glitches and Helldivers 2 wouldn't work on multiplayer until I did that.)
Linux gaming is worlds better than it has been in ages.
Ubuntu in 2009 or so. Booting school computers onto the live DVD felt like hacking. I think around 2016 I installed some spin of Ubuntu on my laptop and used it somewhat regularly. Prior to that it was just random times I felt like using the dual boot function. I mostly used Windows. It took until 2025 for me to switch my desktop to Cachy OS.