For most basic users I recommend using Gnome desktop environment
2- Softwares
Browser --> Firefox 🏆 (It's recommended to tweaks and the settings and use custom user.js (Explanations about user.js))
Librewolf ❤️ (For an out-of-the-box great experience)
Hummm, for Mull the problem is that it lacks some functionality, has not an advanced ad-blocking (even with ublock origin) and firefox-based so it's slower on Android, that's a fact..
But I've no doubt that Vanadium is really cool but is it possible to get it without grapheneos?
Vanadium is GrapheneOS only, it specifically doesn't reimplement things that GrapheneOS already does so might not be as secure on other devices anyway. They used to recommend Bromite too, that's now become Cromite which seems pretty good in my experience.