I’m connected by Ethernet not wifi how can I login without my magic keyboard?

Your magic keyboard has nothing to do with wired, or wireless ethernet connectivity as it uses a separate Bluetooth radio, or USB to lightning cable for connectivity to your Mac. If this keyboard has otherwise failed, then Jack-19 has the answer.

Hi danusia101,

If you cannot use your keyboard to log in, then you must get another keyboard to login with. There is no other way to enter your password.

Cheers,

Jack