Photos in my new iPhone 15 pro max are getting dark and grains

Photos in my new iPhone 15 pro max are getting dark and getting grains after clicking the picture but before clicking the picture the quality is okay. I tried clicking pictures with 11,12,13 pro max all of them have better quality than this please help it’s almost been an year apple still haven’t fixed the issue

HI bro, kindly share 2 photos here in reply to understand the issue. As I mentioned in our previous discussion,

Previous iPhone models have lesser processing of images. thats why we see the difference.

You have camera settings photographic style option set to standard?