In addition to the standard ringtone, you can also add a special, personal ringtone so you will know who is calling without looking at your device. 

Android 10 | EMUI 10.0
Step 1:  Open  Contacts
Step 2:  Choose a  contact
Step 3:  Tap on  Ringtone
Step 4:  Tap on  Allow  if necessary
Step 5:  Choose a  ringtone
Step 6:  Tap on  Back
  1. Open Contacts
  2. Choose a contact
  3. Tap on Ringtone
  4. Tap on Allow if necessary
  5. Choose a ringtone
  6. Tap on Back

Huawei Instructions