Open the Photos app
Go to Albums
Scroll down to Recently Deleted
Open Recently Deleted
Select the photos you want to recover
Tap Recover
Confirm the recovery if prompted
Check the Trash or Bin folder if Recently Deleted is empty
Review cloud backups such as iCloud Photos, Google Photos, or OneDrive
Restore from a device backup if the photos are not in Recently Deleted
Check other synced devices for the missing photos