Personally, I find OpenCamera really good, especially if you get HDR on and are able to hold it steady for a moment.
I’ve tried the Pocophone GCam port and it works well. All produce quite different images from the same scene which is quite weird, I guess the processing is quite different on all the apps.
As you can see in the thread linked by @athair_birb, yes the Pocophone GCam port works really well in low light photos; for the rest of the pictures I’m still using the default FP3 camera app, but I will also try OpenCamera in the future