recover deleted icloud photos and videos

One of my children accidentally deleted all of my videos and most of my photos in my phone and iPad (yes they cleared out the deleted folder also) this happened yesterday and This morning all the iPads and phones backed up and I’ve lost every video I’ve had saved. Even the very special ones of my children. Please help! Can I recover them

I’ve tried to backup my phone and iPad to before the videos and photos were deleted but they videos and photos are gone