If auto-align is activated on your Huawei device, empty spaces on your home screen will be filled automatically after deleting one app by aligning the apps anew.

Android 10 | EMUI 10.0
Auto-align -  Open the  settings
Auto-align -  Tap on  Home screen & wallpaper
Auto-align -  Tap on  Home screen settings
Auto-align -  Activate or deactivate  Auto-align
  1. Open the settings
  2. Tap on Home screen & wallpaper
  3. Tap on Home screen settings
  4. Activate or deactivate Auto-align

Huawei Instructions