After enabling the App-Drawer as the home screen style on the Huawei smartphone, downloaded apps are not stored directly on the home screen but in the mentioned app drawer.
Manually, we can add an app shortcut to the desired home screen, though.

Android 10 | EMUI 10.0
Add an app shortcut to home screen -  Swipe  upwards  to open the app-drawer
Add an app shortcut to home screen -  Tap and hold an  app
Add an app shortcut to home screen -  Drag the  app  upwards
Add an app shortcut to home screen -  Release the  app  to position a shortcut on home screen
  1. Swipe upwards to open the app-drawer
  2. Tap and hold an app
  3. Drag the app upwards
  4. Release the app to position a shortcut on home screen

Huawei Instructions
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