I mean, the camera of (insert any Fairphone) is already pretty disappointing as it is. I’m using a modded Gcam for my Fairphone 4 which drags the resolution down to a staggering 12 mp, or in some cases 8 mp, yet it makes the pictures look so much better. You may want to consider switching to Gcam as well. It’s nothing more than a bandaid, but at least your pictures will look better.