try the trCamera-
https://forum-xda--developers-com.cdn.ampproject.org/v/s/forum.xda-developers.com/apps/google-camera...It works perfectly on my A70.
the portrait mode is excellent.
the features like nightsight and timelapse are also present..
Cons: You cannot use the wide angle or the telephoto cameras.
The native resolution of the photos is 8mp for the rear and 5.2 mp for the front camera.
But still I would prefer the trCamera 1000
times over the stock Samsung camera.