I've been using Fedora for years across several devices. I've only seen my device compatibility improve over the last few releases. For example, my HP Victus laptop's camera would work but not the mic, this has been fixed. My desktop runs several monitors with no issues and keyboard shortcuts have never done anything goofy. It is my preferred distro so I am biased but I've used a lot of others and I think Fedora is one of the more consistently good distros.

I use it in truenas with no issues. Might be worth it to spin up a vm and run it that way.

I'm in IT so my searches are primarily geared towards solving technical issues. I've no complaints. The summarizer is also nice if you don't want to read four paragraphs for two sentences of information.

GrapheneOS works well. But only on pixel devices.

Atuin Magic Shell History is pretty good.

If you're looking for a wide range of games tested, NizVicious. FreddysGamingBenchmark focuses on the steam deck. EtaPrime usually test all his builds in linux at some point but it's mostly the same games as he's a hardware channel (newer titles get added though).

TrueNas gives you a lot of options and it isn't too obtuse. I recommend Scale over Core. Avoid it if you only have the one drive as the os won't share its drive with the rest of the system. Also, while you can use it with only one "storage" drive, it will complain because it uses ZFS and expects you to set up redundency across at least two drives. Might be a hassle for your form factor, but worth a look.

Unless the info is out of date (which is likely) kern.log syslog or messeges.

Have you checked the logs in /var/logs?

Watch a truenas setup for it snd compare the permissions maybe? I got it working on my truenas server but it takes a long time to spin up so it seemed borked but was just slow to start. Not directly comparable, I know, but any port in a storm.

Konosuba?

The only thing that I've encountered that may be relevant, the flatpack version of steam on popOS had issues and after installing from apt my games started working as expected. So possibly reinstall steam with apt vs the popshop.