Check the Photos app’s Recently Deleted folder
Check your device’s Trash or Bin folder
Restore from a cloud backup such as iCloud, Google Photos, OneDrive, or Dropbox
Restore from a phone backup made before the photos were deleted
Check other synced devices for the missing pictures
Look in messaging apps, email, or social media where the photos may have been shared
Use a file recovery app or desktop recovery software
Stop using the device immediately to avoid overwriting deleted files
Connect the storage card to a computer and try recovery software if the photos were on an SD card
Contact a professional data recovery service if the photos are important and cannot be recovered yourself