Various accounts can be added to the Oppo smartphone, including accounts from social media apps, for example, and e-mail accounts, etc. These include

Android 10 (ColorOS 7.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Users & accounts
Step 3:  Tap on  Add account
Step 4:  Choose desired  Account  type
  1. Open the Settings
  2. Tap on Users & accounts
  3. Tap on Add account
  4. Choose desired Account type

Oppo Instructions