I'm sorry I know there is another question like that here Can't remove Flatpak software application. It is also already answered, nonetheless I couldn't figure out the solution from there. I also couldn't comment because of the privilege (I'm new) so I ask there again. Basically I installed flatpak but then I decided to remove it. I followed the instruction from here How to completely remove flatpak so:
sudo apt install flatpak
flatpak uninstall --all
sudo apt purge --autoremove flatpak
but the flatpak app remains and if i run gnome-software on terminal that's the one that open up, not snap.
Could someone help me?