I have a friend who wants to get more privacy aware but is not yet ready to commit to a new ROM based solution.

I've been using Graphene for quite a few years now and I'm now no longer confident I know all the tips/tricks/settings etc for killing as much Google shit as possible on a stock Android device (its Android 15 on his phone).

So what I'm after is a link to a good article/tutorial/guide/whatever that is very thorough and goes into a lot of detail into removing/disabling as much Google as possible, particularly where it affects privacy.

I already have a bunch of apps in mind to replace his usual stuff (Orbot, Obtanium, Molly etc) its just getting rid of as much privacy invasive google stuff as possible first that I need a reminder on.

If its relevant the phone has been flattened so its totally clean. Thanks in advance.