Accidentally Deleted videos on iPAD!

I accidently deleted 3 of my videos on my iPad. I was making and editing a video in iMOVIES, when I was told that I don't have enough storage. I thought I would make some room, thinking my editev versions in iMovie were safe. I was wrong. Is there any way i can retrieve these videos. I did not back up my iPad with iTunes. The videos were done just two days ago. I spent 60 CHF and downloaded Wondershare Dr Fone to help me. I was able to retrieve every photo except those 3 short videos.......is it a lost cause......PLEASE HELP.

Alexia Gardner