WD My Cloud Data Loss

I may have accidentally deleted photos backup that I stored on the WD My Cloud - is there anyway to see if it’s still on the drive somehow as if it was an external hard drive?

Depends, What computer/devices are you using? Are they Windows, Apple, Linux etc. Do you know the name of the folder the pictures were in or the name of each photo? How did you back them up? Give some information to work with!