The driver side headlight lowbeam is not working what could be the problem?

What is your question?

the lowbeam does not work but all the rest of the lights in the headlamp work. I already checked the fuses they all are good. the bulb is brand new. then i took passenger side headlamp and plugged into driver side and its doing the same thing so it has to be in the wiring or a possible bad/dirt ground i dont know.