Check the Photos app’s Recently Deleted folder
Restore from a cloud backup such as iCloud, Google Photos, OneDrive, or Dropbox
Restore from a device backup made before the photos were deleted
Check other synced devices for the missing photos
Look in file manager or gallery app trash folders
Use a photo recovery app if the photos are not in trash or backups
Connect the device to a computer and scan for recoverable files
Stop using the device immediately to avoid overwriting deleted photos
Contact the device manufacturer or cloud service support if needed