If you’ve accidentally deleted a photo on your iPhone, there are several ways you might be able to recover it. We’re going to run through a few of the ways you might be able to recover a deleted photo, and while they may not all be specific to your situation, hopefully at least one will get your photo back where it belongs — in your photo library.
How-To Geek
https://www.howtogeek.com/403598/how-to-recover-a-deleted-photo-on-your-iphone/