I bought a s21ultra after an Xperia 1ii, I expected it to be miles ahead on the camera front from what people say.....I can't say I was that impressed. Looking at some previous Sony photos, I'd say they were better.
The s21u is better at night for point and shoot in auto and probably better in auto for fast snapping.
The Sony needed to be messed around with, but if you like that, it's perfect.
I had the S21U for a short while, and like you I wasn't impressed with the camera one bit.