Recorded photos or videos are stored on the OnePlus smartphone in the camera folder, and can be moved directly to albums.

After selecting the file(s), we are given an option to either move or copy the pictures.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Gallery app
Step 2:  Tap and hold a  photo/video
Step 3:  Open the  menu
Step 4:  Tap on  Move to
Step 5:  Choose an  album
  1. Open the Gallery app
  2. Tap and hold a photo/video
  3. Open the menu
  4. Tap on Move to
  5. Choose an album

OnePlus Instructions