Why is my iPhone photo library blurry?

Over the last couple of days I've noticed my photos are blurry. I can take a photo fine, and it will be a good quality photo. However, later on I'd go to my photo library and the photo would be blurry. My phone ha randomly blurred a lot of photos which have been taken in the past few months (they weren't like this before). Even photos I took last week which were perfect before, are now blurred and pixelated.
I've also been trying to upload photos onto Facebook which it won't allow me to do, and it also won't allow to send pictures via WhatsApp.
Sometimes when I take a picture it will go a funny beige colour or black out completely.
I tried deleting a lot of stuff from my phone as I didn't have a lot of memory left but it hasn't changed anything.
Also the lens isn't scratched at all.
Does anyone have any ideas? Would really appreciate it!

Mines is like this sometimes you may have a faulty phone. Why don't you take it to apple store they will be happy to freplace it for free

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