Topic: Question about save files and using other peoples save files

I have a question about save files and how they work.

So recently I tried selling my PS4 and someone said they will buy it so I initialized my ps4 to sell it to him. Well after a week later he said he is not buying it anymore and I was stuck with a PS4 that had all my save data wiped. I did not have ps4 plus so I don't have any cloud saved games either.

My real question is if I wanted to use other peoples save data for a game like Final Fantasy 7 remake would that be possible? I left off at chapter 8 and I wanted to continue the game until someone else decides to buy my ps4