In contrast to the cache, the app data contains all relevant and important data, including settings, content (photos, videos, files, ...) but also scores and much more.

If the app data is deleted, the app will inevitably be reset to its original state (factory state). Only installed app updates remain unaffected. All other data will be deleted!

Android 10 | ColorOS 7.0
Step 1:  Open the  Settings
Step 2:  Tap on  App management
Step 3:  Tap on  App list
Step 4:  Tap on  App  you want
Step 5:  Tap on  Storage usage
Step 6:  Tap on  Clear data
Step 7:  Confirm with  OK
  1. Open the Settings
  2. Tap on App management
  3. Tap on App list
  4. Tap on App you want
  5. Tap on Storage usage
  6. Tap on Clear data
  7. Confirm with OK

Oppo Instructions