iPhone 11 camera blurry

So I have bought an iPhone 11 in nov and 2 days later I noticed 95% of my pictures on the rear camera on apps (snapchat, insta etc...) was blurry especially with flash on! Even normal camera only ok pictures I was getting was on the portrait option. I sent my iPhone back to Apple got a replacement and within days again I’ve had the same problem! Does anyone can this be fixed or is it just the iPhone 11 in general so disappointed after spending a lot of money on this phone!!