By default, the contacts on your Huawei device are sorted by first name, you can change this in the contacts settings if you are preferring to sort them by last name. 

Android 10 | EMUI 10.0
Step 1:  Open  Contacts
Step 2:  Open the  menu
Step 3:  Open the  settings
Step 4:  Tap on  Sort list by
Step 5:  Choose  First nam e or  Last name
  1. Open Contacts
  2. Open the menu
  3. Open the settings
  4. Tap on Sort list by
  5. Choose First name or Last name

Huawei Instructions