Why is f-droid a no go for you? Obtainium and zap store on my list for sure.
accrescent, obtainium & nostr:nprofile1qqs83nn04fezvsu89p8xg7axjwye2u67errat3dx2um725fs7qnrqlgpzamhxue69uhhxetpwf3kstnwdaejuar0v3shjtc3uszjr. A separate profile for Google Pay Services if you must.
not f-droid.
Discussion
even on nostr:nprofile1qqs83nn04fezvsu89p8xg7axjwye2u67errat3dx2um725fs7qnrqlgpr3mhxue69uhkgctkv5h8xapwvajhymtp9e5kutmwdaehgusqhknul, best practice would be to only install apps signed by the developer.