I’d strongly recommend to stick to a mainstream distribution like Fedora, Debian, Mint,…
With bigger distributions you have more people working on them (-> more packages well maintained), you get a bigger community, and therefore it’s easier to get help if anything breaks.
I’m not sure which distribution to recommend though, as they all have advantages and disadvantages when it comes to gaming. Ten years ago I have switched to Gentoo (which is definitely not a distribution for new Linux users) when I got fed up with Ubuntu’s Enshittification, and have stayed there ever since, so I lost a bit track which distributions are good for gaming now and which aren’t.