As with the user accounts, you can also delete the guest account created from the Huawei smartphone. All data of the guest account will be deleted.

Android 10 | EMUI 10.0
Step 1:  Open the  settings
Step 2:  Tap on  Users & accounts
Step 3:  Tap on  Users
Step 4:  Choose the  guest account
Step 5:  Tap on  Delete guest
Step 6:  Confirm with  Delete
  1. Open the settings
  2. Tap on Users & accounts
  3. Tap on Users
  4. Choose the guest account
  5. Tap on Delete guest
  6. Confirm with Delete

Huawei Instructions