Ubuntu 22.04 cannot find where software is installed?

I installed metadata-cleaner sometime ago and have since then tried removing it from both the gnome-software and the snap-store. However it is still there when I search using the start key (‘windows’ key). It is not just an icon, the app actually opens. I’m not sure what is going on and where this software is installed.
How do I find it and remove it?

EDIT

The output of apt policy metadata-cleaner && snap list | grep metadata-cleaner

metadata-cleaner:
  Installed: (none)
  Candidate: 1.0.8-1
  Version table:
     1.0.8-1 500
        500 http://gpl.savoirfairelinux.net/pub/mirrors/ubuntu jammy/universe amd64 Packages
Asked By: pixis

||
Source

Meetadata Cleaner app is listed at Flathub, so it’s possible that it could have been installed that way. flatpak list lists all installed flatpak applications and/or runtimes.

If metadata-cleaner is a .deb package then Synaptic package manager (sudo apt install synaptic) should be able to completely remove it.

Answered By: karel