@akane8u: If the images were not present in the Gallery app > Tap the 3 dots > Recycle Bin, I recommend going to Apps > Samsung (folder) > My Files > Images to see if they are present in this location. You can also check Apps > Google (folder) > Photos, as you may find that the images have been automatically backed up here, or check Microsoft (folder) > OneDrive. If you have a Samsung Cloud backup, go to Gallery > Tap the 3 dots in the top right > Settings > Sync With Samsung Cloud, to see if you're able to resync the image to your device. If an external backup hasn't been created, and the images are not present in the locations listed above, then sadly it will not be possible to retrieve them. For future reference, open the Gallery app > Tap the 3 dots in the top right > Settings > Recycle Bin > On (if applicable), as this will store deleted images for 15 days before deleting them, allowing you to recover them in similar instances.