On the Oppo smartphone, in addition to standard backgrounds, animated live backgrounds can of course also be used as your own backgrounds such as photos or images. Changing the background can be done via the start screen itself, but access to all options is easier via the settings.

Android 10 | ColorOS 7.0
Step 1:  Open the  Settings
Step 2:  Tap on  Home Screen & Wallpaper
Step 3:  Tap on  Set wallpaper
Step 4:  Choose between  Static wallpapers ,  Live wallpapers  and  Photos
Step 5:  Choose desired  Album
Step 6:  Choose desired  Wallpaper
Step 7:  Tap on  Set as
Step 8:  Tap on  Set as Home screen wallpaper
  1. Open the Settings
  2. Tap on Home Screen & Wallpaper
  3. Tap on Set wallpaper
  4. Choose between Static wallpapers, Live wallpapers and Photos
  5. Choose desired Album
  6. Choose desired Wallpaper
  7. Tap on Set as
  8. Tap on Set as Home screen wallpaper

Oppo Instructions