The Gnome store on Debian worked pretty okay for me, though it is a bit slow and always like, reloads the page you’re on after installing something, which is annoying. It uninstalled apps fine, AFAICT.
It had access to the entire Debian repo for me, so I’m not sure why only 3 things were showing up for you.
The Mint store has flathub enabled by default, but you can flip it off in the preferences. If flathub is enabled, it’s show both the flatpak and the native version from the repos, if available, allowing you to choose.
The Gnome store on Debian worked pretty okay for me, though it is a bit slow and always like, reloads the page you’re on after installing something, which is annoying. It uninstalled apps fine, AFAICT.
It had access to the entire Debian repo for me, so I’m not sure why only 3 things were showing up for you.
The Mint store has flathub enabled by default, but you can flip it off in the preferences. If flathub is enabled, it’s show both the flatpak and the native version from the repos, if available, allowing you to choose.