Honestly, my recommendation for new users who are into gaming is Bazzite. Just install everything through the software store and it just works. Well, everything that’s available as a flatpak at least. Steam comes preinstalled, as do all the drivers (among some other various gaming-oriented things like kernel optimizations and Lutris), so it’s basically just install and done. The software store, Bazaar, will find basically anything a normal user needs. The nice thing about atonic distros is that you generally don’t need to do anything through the command line,as installs are perfectly consistent across all computers (so no random things breaking in the background without someone else noticing and either filing a bug report for you in the beta, or fixing the issue outright). After over a decade of Linux use, I’ve never found an easier distro. I honestly have switched to it as my main distro because I love Fedora, and the atomic features are nice (and Bazzite is just a little nicer for my use case than Kinoite).
When I set someone up with Bazzite, I just tell them to install everything through the software store, and I rarely get questions other than “how do I install this software that isn’t available on Linux”, which I usually meet with a recommendation for an alternative, or if it’s really critical, I’ll have them install through Bottles or something. I always mention the “no Adobe or Autodesk” caveot before they install, so I never really get questions about that except for “well, what would you recommend I use instead?”
As to answer your questions directly:
It is very common, so you can find Bazzite specific answers,
As far as I’ve used it (which is a couple years now) things never break, so finding solutions that work in other distros doesn’t tend to apply for me (except for when I want to make custom scripts like when I bound a mouse button to hard mute and unmute my mic, though I just had to look up generic Pipewire stuff)
Everything installs as a flatpak, so selinux is essentially completely unnoticed. I’ve never had a single issue with selinux and I’m a power user. I’ve used Fedora-based distros for many years and only ever encountered selinux issues on my server, and that was for low-level processes that aren’t relevant to desktop use (for instance, setting up NUT to automatically power off all devices on my network during a power outage when the UPS battery is low)
Honestly, my recommendation for new users who are into gaming is Bazzite. Just install everything through the software store and it just works. Well, everything that’s available as a flatpak at least. Steam comes preinstalled, as do all the drivers (among some other various gaming-oriented things like kernel optimizations and Lutris), so it’s basically just install and done. The software store, Bazaar, will find basically anything a normal user needs. The nice thing about atonic distros is that you generally don’t need to do anything through the command line,as installs are perfectly consistent across all computers (so no random things breaking in the background without someone else noticing and either filing a bug report for you in the beta, or fixing the issue outright). After over a decade of Linux use, I’ve never found an easier distro. I honestly have switched to it as my main distro because I love Fedora, and the atomic features are nice (and Bazzite is just a little nicer for my use case than Kinoite).
When I set someone up with Bazzite, I just tell them to install everything through the software store, and I rarely get questions other than “how do I install this software that isn’t available on Linux”, which I usually meet with a recommendation for an alternative, or if it’s really critical, I’ll have them install through Bottles or something. I always mention the “no Adobe or Autodesk” caveot before they install, so I never really get questions about that except for “well, what would you recommend I use instead?”
As to answer your questions directly: