I use a Google Pixel and I can’t use GrapheneOS since my phone is carrier locked.
Google play services is likely the biggest privacy invasion I have right now, and I can technically disable it entirely since I don’t use many proprietary Google apps; I mostly use FOSS and privacy respecting alternatives.
What do I do to improve my privacy? I have location services off constantly but am sure that Google play services just bypasses it.
Don’t fall into the illusion that you can have privacy with stock android. Google has admittedly igrored user settings to continue spying them.