Restoring removed USB 10/100/1000 Ethernet service
Solution for “I accidentally removed the USB 10/100/1000 Ethernet service”
Go to the Menu Bar (upper left on your screen)
> click on Finder > Services > Services Settings > Restore Defaults > Done
Make sure you are still on Services on your left side before you click on Restore Defaults.
Check again: Apple icon > System Settings > Network > Other Services. (It should be right here). It worked for me, I hope it works for y’all.
MacBook Air (2018 – 2020)