If a photo or album is deleted, it will remain in the trash for another seven days. only after this time will the content be permanently deleted. during this time, all content can be restored. to remove a photo or album from the LG smartphone within this period, the trash can be emptied. this will immediately and irrevocably delete everything.

Android 9 | LG UX 9.0
Step 1:  Open the  Gallery -App
Step 2:  Open the  Menu
Step 3:  Tap on  Trash
Step 4:  Tap on  Delete
Step 5:  Confirm with  Delete Album
  1. Open the Gallery-App
  2. Open the Menu
  3. Tap on Trash
  4. Tap on Delete
  5. Confirm with Delete Album

LG Instructions