A lot of people have been recommending Bazzite recently. It’s like SteamOS in a lot of ways and focused heavily on gaming.

SteamOS is unofficially available as well now but you’ll run into issues if you have Nvidia GPU like me.

I’ve heard Pop!_os being good for gaming too, and while I’ve used it, I didn’t use it for gaming.

This site has 11 that it recommends for gaming focused distros itsfoss.com/linux-gaming-distributions/