Seems like the PIxel 3/4 frequently get mentioned for their cameras-- but I've seen serious photographers describe them as a great point-and-shoot camera, while a dedicated user might get better results from a different phone.
I've looked at some pretty stunning pictures from Nokia phones on the Nokia Reddit subforum. I think most of the pictures posted were from phones that are more expensive than your target budget though. The general consensus seems to be that the cameras are very good, and the software perhaps not so much.
Might be worth asking on the Nokia reddit to see if there is a recommendation that meets your budget.
(I have a lower line Nokia 3.1. The camera 'works', which is about the extent of my needs for a camera.)