A new feature in iOS 16 lets you edit multiple photos at the same time.
How to Mass Edit Photos on an iPhone
find and open the first photo you want to edit.
Tap Edit and apply whatever edits you want to make.
When you're done making edits, tap Done.
Tap ... in the top-right corner.
ap Select and then select all the photos you want to apply
Tap Paste Edits. This applies the edit settings to every selected photo.
A message pops up to let you know the edits have been applied to the selected photos.