The added accounts can be viewed and edited or removed on the Xiaomi smartphone in a clearly structured manner, including Google, WhatsApp, Facebook, etc. If any of these
linked accounts are removed, the associated data, such as chats, documents or photos may be deleted while the app remains installed.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Accounts & sync
Step 3:  Choose an  account type
Step 4:  Choose an  account
Step 5:  Tap on  More
Step 6:  Tap on  Remove account
Step 7:  Confirm with  Remove account
  1. Open the Settings
  2. Tap on Accounts & sync
  3. Choose an account type
  4. Choose an account
  5. Tap on More
  6. Tap on Remove account
  7. Confirm with Remove account

Xiaomi Instructions