I recently installed chromium, created a new user and logged into a website. After my work was done, I removed chromium with “sudo dnf remove chromium”.
A few days later I installed chromium again through dnf. My user account was still there and I was logged into the same site.
Is there a way to avoid this and uninstall an app along with all its user data?
Sounds like you may want to run chrome in docker or try using nix. Nix won’t clean up your user data automatically but with a few tweaks could do it easily. Docker will completely prevent files from hanging around (if you don’t mount your home directory in the container), but if you want to download files to your host is its a bit tricky.