You can set yourself, which apps on your Huawei device are allowed to use mobile datas and/or Wi-Fi.You can, for example, deactivate the mobile data network access for videostreaming.

Android 10 (EMUI 10.0)
Step 1:  Open the  settings
Step 2:  Tap on  Mobile network
Step 3:  Tap on  Data usage
Step 4:  Tap on  Network access
Step 5:  Activate or deactivate  Mobile data/Wi-Fi  for the  app  you want
  1. Open the settings
  2. Tap on Mobile network
  3. Tap on Data usage
  4. Tap on Network access
  5. Activate or deactivate Mobile data/Wi-Fi for the app you want

Huawei Instructions
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