The mobile internet as well as internet access via WLAN can be enabled on the LG device via a USB transfer for the connected device.

To enable USB tethering, the USB cable must already be connected.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  Tethering
Step 3:  Enable or Disable  USB tethering
Step 4:  Confirm with  OK
  1. Open the Settings
  2. Tap on Tethering
  3. Enable or Disable USB tethering
  4. Confirm with OK

LG Instructions