Almost every LG smartphone has a front camera for selfies in addition to the main camera, which is used via the same app as the main camera and can be activated or deactivated by simply tapping the change button.

Android 9 | LG UX 9.0
Step 1:  Open the  Camera -App
Step 2:  Tap on  Switch Camera
  1. Open the Camera-App
  2. Tap on Switch Camera

LG Instructions