napoleonsdumbcousin

As someone who uses GrapheneOS with sandboxed GooglePlay on his only smartphone (with daily usage for years at this point): I don’t know what kind of adjustment you are referring to. I never had to adjust to anything, because I never encountered anything that GrapheneOS couldn’t do that stock Android could. Follow the installation process and after that the phone behaves like a regular phone, except you have way more options regarding security and privacy.

Is your friend trying to use GrapheneOS without any Google services maybe?

Until they get forced to implement an off-switch, you can block them with uBlock Origin in the meantime.