PSA: If you use Bazzite you need to do a manual fix to get updates
www.gamingonlinux.com
Bazzite, the popular version of Linux powered by Fedora and Universal Blue that's great for handhelds including the Steam Deck, ASUS ROG Ally, Lenovo Legion Go and others needs a little manual user effort after a bit of human error.

Bazzite is an alternative OS to SteamOS for the deck and other handheld PCs. Unfortunately due to a mistake, anyone who installed Bazzite before July 3rd 2024 won’t get automatic updates.

If this affects you, I’d suggest checking out the article to get instructions on fixing it.