How can I Recover permanently deleted videos and pictures from 3 days ago?

Read this support article for full information --> Delete photos on your iPhone or iPad - Apple Support

- "If you want to permanently delete your photos or videos, you can remove them from the Recently Deleted album. When you delete a photo from this album, you can't get it back."

"Permanently" means "permanently", with no chance of recovery.

This post by ASC contributor Lawrence Finch includes a list of places you can check where you may still have copies of photos.

Recovery permanent deleted photos - Apple Community