If it was encrypted, the encryption key gone.
Even if not encrypted it will be hard to recovery on a stock phone.
If you manage to recover it the folder structure is gone. A sea of files not necessarily in any particular order and disassociated from each other with no way to restore those associations.
Jpegs with no EXIF data and so on.
No time stamps. You can scan by size and file type but that's about it. Better have one hell of a photographic memory...