Linux doesn't work that way for the software outside the repo, you either have to go find a deb/rpm and install it using another tool, or god forbid the thing y

Linux doesn't work that way for the software outside the repo, you either have to go find a deb/rpm and install it using another tool, or god forbid the thing you need needs another repo, which only works on x minor version of the OS in this distro and will cause the other widget you installed from the distro's provided repo to break because dependencies are different. AppImage/Snap are both trying to fix this, but for now it still sucks. On the Mac, the whole "drag an app to the trash to delete" thing has always been a lie, since most applications spew things in ~/Library, /Library, and other app support directories, which means you miss lots of stuff that AppCleaner has to find. It's still a terrible experience, and if you don't know that then downloading a new copy of the app won't fix anything because all of its preferences and extra files are in a directory you didn't think to clean out because its hidden by the system.