You can delete the saved words, voice data and phrases on the keyboard of your Huawei smartphone.

Android 10 (EMUI 10.0)
Step 1:  Open the  settings
Step 2:  Tap on  System & updates
Step 3:  Tap on  Language & input
Step 4:  Tap on  SwiftKey Keyboard
Step 5:  Open the  menu
Step 6:  Tap on  Clear typing data
Step 7:  Confirm with  Continue
  1. Open the settings
  2. Tap on System & updates
  3. Tap on Language & input
  4. Tap on SwiftKey Keyboard
  5. Open the menu
  6. Tap on Clear typing data
  7. Confirm with Continue

Huawei Instructions