On Arch I don't need any, I just run paru without any options, which by default invokes a full Pacman update, as well as updating all AUR packages. But I have a system maintenance script, that, besides doing some other stuff that's specific to my system, runs paru -Sc --noconfirm to clean the Pacman package cache, and delete unneeded cloned AUR Git repos and build artifacts.
Yay doesn't replace normal packages with AUR packages. Btw It's not just an AUR helper, it's a wrapper for Pacman with AUR support built-in. Check out paru btw, it's a more modern version of yay that basically works the same way: https://github.com/Morganamilo/paru
There's a simple and intuitive application called Universal Android Debloater which does everything for you
It's free and open source on GitHub: https://github.com/Universal-Debloater-Alliance/universal-android-debloater-next-generation