OPPO A57 4G
Android 12.0
1. Find "App management"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Apps.
Press App management.
2. Turn notifications on or off
Press the required app.
Press Manage notifications.
Press the indicator next to "Allow notifications" to turn the function on or off.
3. Return to the home screen
Press the Home key to return to the home screen.