Is there something like the AUR for debian-based distros?
I've been using a lot of Debian based distributions recently after half a year on Arch. The main thing I miss a lot is the AUR. The convenience of having all my packaged in one format is a huge reason why I use Arch. Is there anything like it for the AUR?
I also think that things like Flatpaks and Snaps could be useful, as I don't really want to have tons of repositories for tons of programs I install.
Not the answer you are looking for, but you can always compile things yourself.
> "Gus are you bleeping INSA--"
It's very easy to compile something after you get the hang of it. The experience varies from typing three commands (./configure,make and sudo make install) to just one. (sudo make install). And you can find out the package dependencies by reading the README file... or by just taking a look at the project directory. Or even at the Makefile file (which is a some sort of "installer" that you can edit and change to whatever you want.)