Even after using PopOS I dont understand the hype. It is Ubuntu-based, meaning that its packages are stale and often quite out of date, which isn't something I would recommend for a gaming distro.
Better to pick one of the following, which are gaming focused, user friendly, and have up-to-date packages for {Mesa, Vulkan, Wine, Kernel, etc}:
Edit: My reason for saying that up-to-date packages are paramount is because a newer kernel supports more features, better performance, new hardware support, less bugs, and the same is true for packages that effect gaming. Desktop environments get better quickly through updates and bug fixes that effect gaming may take a year of more to reach pepetually out of date distros like Ubuntu. It is generally quite important, but less important if you use Steam Flatpak because it is slightly sandboxes.