Deleted photos are kept in a trash bin for 30 days until they are permanently and irrevocably deleted from the Huawei smartphone, and can be restored at any time until the deadline expires.

Android 10 (EMUI 10.0)
Step 1:  Open the  Gallery app
Step 2:  Tap on  Recently deleted
Step 3:  Choose a recently deleted  photo
Step 4:  Tap on  Restore
  1. Open the Gallery app
  2. Tap on Recently deleted
  3. Choose a recently deleted photo
  4. Tap on Restore

Huawei Instructions