Uninstalling app but isn't removing app data and settings

Hey people, actually I want to uninstall my thorium browser and I am trying to uninstall it from software app and it's saying "app data and settings will kept on disk, to allow restoring the app in future". I want to complete uninstall the browser/app. Please tell me how do it do that?

Check ~/.config and ~/.local/share for lefterover.

Is it a .deb, Snap or Flatpak Version?

Yes, Thorium can be a pain to remove. Check ~/.local/share as @Storm has suggested. Also check hidden folders by pressing Ctrl+ H whilst in /home, look for .thorium.