I have been using NoRoot Firewall since my day1 with Android. It takes some times but I allow the least amount of rules per app, then block . per app, and block globally the ones I identify (trackers etc.)
I also block 31... range globally and the FB and FBCDN addresses (namely)(but I don't use FB/IG/WA anyway)
I also block 31... range globally and the FB and FBCDN addresses (namely)(but I don't use FB/IG/WA anyway)