IPad Pro 11 2021 camera quality is very bad

I bought IPad Pro 11 2021 and the quality of pictures is not good, very grainy,bad quality.My previous IPad Pro 10,5 make much better pictures.I wanted to return this Ipad Pro 11 2021 back in store next day but they said it’s not defective and they will not give my money back because I already activated this Ipad. And before to buy it I didn’t even check the camera because I thought that anyway it will be the best Ipad because it’s an last IPad Pro and it’s an Apple Ipad, and now I see that camera is like in old push-button phones.Is it possible to fix it?Or give me my money back