Your experience is very different from mine. I usually have to dig in and fix crap that shouldnt be wrong in ubuntu long before I even get to the upgrade phase! Lots of circular problems: oh this snap doesn’t have the full dependencies. Thats ok, I know how to edit them. Except that didn’t work, so lets add the PPA. But that was out of date, lets build from scratch… and so on.
Edit: Let me add something: Glad it worked for you. And Ubuntu is Linux, and we have that in common, and I want to make sure this type of discussion is always framed under “SAME TEAM!”
You just click on communities and browse or search for ones to subscribe to.
Although if you are a smaller instance you may not see as many if others haven’t branched out if I understand correctly.