headlights on 2000 Kia Sephia

My driver side headlight is very dim even after i changed the bulb,can anyone help me with the problem?

Asked by for the 2000 Kia Sephia
Need to check the wires and see if has loose connection, sounds like a ground problem. Sometimes when reconnecting the connector the spade will push out instead of sliding inside each other.
I will try that,Thank you!!