Bazzite mostly suggests installing stuff via Flatpak or Homebrew. (No, really, brew on Linux lol). You can also layer in things with rpm-ostree but it's clunky. I think the immutable OS makes sense for a consumer but not for a developer.

So I'm using Nobara instead. It's a different Fedora-for-gaming but has most of the same improvements. It is a traditional system, not immutable. CachyOS is also very popular and that gets you an Arch-for-gaming. Just yesterday I learned of PikaOS, a Debian-for-gaming.

The main thing all these gaming-customized systems are doing is getting graphics drivers and proprietary codecs installed for you easily.