wetop Most if not all apps will work. You can limit how much said American companies can pull from your phone by using separate profiles. Thou with stuff like Amazon, Ebay etc they will still be able to profile you just the way they did on stock via your interactions with the app.
Installing google to get bank etc going is also okayish, since you again can put them in separate profiles and disable all permissions including network, no need for primary (google) account there either. As they mostly need framework to function.