Hi @emma95, I'd be happy to help!
The answer is: no. You can't restore permanently deleted files.
However, if you're talking about a shared folder, keep in mind that you can remove your access using these steps.
More specifically, you won't be able to permanently delete a shared folder, since you'll be getting an error "You do not have permission to permanently delete (name folder)".
I hope this helps, let me know if you have any questions!