Hi, I have a master in computer vision, let me explain.

If you put it in terms of signal processing, bluring is what we call a "low-pass" filter. It conserves low-frequencies, but deletes high frequences. Looking at the image in the frequency domain using a fourier transform makes that obvious. So thats why you can't unblur them. The information is gone. Its like erasing part of an image, except in frequency space.

Some machine learning methods can sharpen an image. Understands that they do not recover the information that was lost. Instead they make an "educated guess" of what the lost information might have been.

> The only possible image that could’ve created the new blurred image is your original photo right

No, its not, and hence the problem.