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The best way to "recover" a photo is to never lose it in the first place. Users should verify that is enabled in their settings. Periodically checking the "Locked Folder" (which does not back up to the cloud) and maintaining a secondary backup on a physical hard drive or another cloud service are recommended best practices for digital preservation.

for items that were backed up to your Google Account. how-to-recover-deleted-photos-from-google-photos

Navigate to (or the Library tab) and tap Trash (or Bin). Touch and hold the photo you wish to save. The best way to "recover" a photo is