On the LG smartphone, the status bar shows the time and notification icons, and you can disable the app icons in the status bar if you wish.

However, only the icon is hidden and the notification remains available when the status bar is opened.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Apps & notifications
Step 4:  Tap on  Notifications
Step 5:  Enable or Disable  Status bar icons
  1. Open the Settings
  2. Tap on General
  3. Tap on Apps & notifications
  4. Tap on Notifications
  5. Enable or Disable Status bar icons

LG Instructions