Hello,
Before bidding to this project I myself tried and executed the technique to recover photo/video because I know the value of memories as my grandfather had also been passed recently.
So, I have come up with 3-4 strategies that can work.
I am a computer science and engineering student from a top institute of India i.e IIT.
I will try my best to solve your problem.
You can tell me the details about the time you delete them, from laptop or mobile, and other information and we can start working.