even those deb files that only run on Ubuntu for some damn reason on my Debiain system.
FUCK i understand now! the software i wanted to install had a .deb but its website said it was for ubuntu 20.04, no wonder it didn't work on a debian container!
it didn't work, but i soon found out by looking at it's entry on the AUR that the package is itself broken, not the distro environment it's supposed to be installed on