I don’t know how to diy it on your pc, but on my steamdeck with the latest proton version most repackaged games work fine.

I am assuming its the same with Apple and as long as you sign out of your google account before wiping, it is no longer linked to you. Hopefully it will prompt you to do so when wiping the device locally.

Indie anything as well as books, except textbook cause expensive and they are useless anyway, we just have to buy them for school and literally never open them.

I use Infomaniak, as they follow swiss privacy laws and had the cheapest registration for .ch when I registered it first.