Why is my camera focus messed up? (Samsung A5 2016)

I have a Samsung A5(2016), I'm using it for over a year now and so far so good, except my camera. The camera focus worked perfectly until one day when it got messed up all of a sudden. When I open the camera to take a photo sometimes the focus is normal and sometimes is blurred only on one side of the photo(always the right side).
I checked and the camera is not scratched. Is it possible to be a software issue? The software was updated before the problem appeared and also after, but nothing changed with the last update.
Thanks to whoever knows the answer of my question and possibly the fix.

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