This is a doubt or question that I had a long time ago and I wanted to know if it is possible, it would be of great help if you answer, thank you very much for your time, have a good day. ?
It should do that, it's reading the entire disc so it should find all deleted files, but may not recover all.
I would also say the same. It should recover whatever is there.
From the question asked there is a bit of an elephant in the room here though.
The recovered files will be as they were - so if the deleted user had any particular permissions/passwords then their recovered files will also still have/need those permissions/passwords
Recovery will (try to) get back exactly what was there.