When it comes to gaming, I can’t really say I’ve found a distro that “felt” better for gaming, and I’ve been on a fair amount of them - Fedora (and Nobara), Arch, NixOS, Endeavour, pop!_OS - I haven’t noticed a difference. I didn’t measure benchmarks because at the end of the day its about what I can perceive, not what I can read from a spreadsheet.
Realistically I think the only difference I ever noticed was with pop there’s a Nvidia ISO that has the drivers already included in the live environment, so I get to skip a step post-install.
I find myself just using Flatpaks for gaming stuff (Steam, Bottles, Heroic, etc) these days since I know that I can take those on just about any distro. I’ve heard that there is some FPS loss from running games through Flatpak, but again I haven’t done any benchmarks so I can’t confirm nor deny this.