I'm an Ubuntu user and the first thing I always do in a new system is removing the Ubuntu Store, completely removing snapd, and installing the Flathub Store.
Honest question; why do you still use Ubuntu then? By now, Snap is such a fundamental part of Ubuntu that it begs the question whether Ubuntu is right for you if you want to avoid it. Why not use a derivative or upstream that makes different choices?
Unless I have another reason to reinstall Linux, it’s far easier to uninstall Firefox and the other handful of Snap apps and just use Flathub/flatpak exclusively. I just need to be careful I don’t pick the default store app when searching for software.