I use Casa"OS". It’s fine, but nothing groundbreaking. Cockpit for example can do pretty much the same, and for Docker containers, I nowadays mostly use docker compose.
But hey, it helped me a quite a bit in the beginning, and it’s cool. Pretty basic, but enough for most people, mainly beginners.
Bazzite Bazzite Bazzite!
I was at the same point a while ago.
Everything I touch breaks, and I also had enough of my system breaking because updating with an unstable power grid is like playing russian roulette.
I turned to Fedora Silverblue first, then rebased to uBlue. Aurora first, and then Bazzite. Silverblue feels exactly as the regular variant, Aurora is great for desktop use, and for my gaming PC, Bazzite is fucking great. It just works.
It comes with a lot of tweaks and super many small additions that just make your life easier, especially for gaming.
Updates just happen in the background when there’s nothing better to do and get applied to the next boot image. And in case something doesn’t work as expected, you can always go back in time.
You can also customise it almost/ just as much as regular distros, but it isn’t quite as easy if you want to customise A LOT (e.g. using TWMs).
I didn’t notice huge performance boosts tho, it just comes with more tools ootb, for example to make your GPU more silent when idle.
As said, Bazzite is based on Fedora, so you always get new great modern stuff, at the same time as the other Fedora users do.