Data recovery is never a sure thing. You try a title then another until you get what you want or run out of titles to try. This can really unsettle folk that thought "If I pick the right title I can get it back."
Isobuster is a good choice. I put others in a CNET Sticky at https://www.cnet.com/forums/storage/ under the top post "Lost and Found."
Does anyone know whether Isobuster Data Recovery Software can recover deleted data from a blu ray hard drive, or does it only work on a pc?
Cheers big ears!