[SmG st0rm]

Today I was submitting my assignment but before submission I thought I should review my all 14K words and figures. While reviewing, my 50% images got broke. I have no idea whatt happened i was like wtf...
I've seen tutorials from YouTube and asked to google. Even I have asked to ChatGPT to help with it. 
The pictures I've inserted is literally the things which can get me 100 marks because my assignment is top class (according to my teacher feedback).

Does anyone know how to fix this? I've submitted my assignment informed my teacher but still I wanna know the cause of this disaster. 
Even my all backups broke just few hours of before submission. I tried to check on different devices too but still not worth it.