- This could be due to missing Google services?
I wouldn’t say that GrapheneOS isn’t ready for daily use just because you have some issues. It’s a mature project with decent support for only a couple of devices and a lot of people use it on a daily basis without issues.
It’s simply a risk. Android is designed how it is for a purpose.
I still use a custom ROM, GrapheneOS - which also strongly recommends not to root your device!