Monka nator

Hello , was hoping somebody could help me where to start looking.
in a parking lot our car hit our front passenger side, minor damage..but pulled bumper a bit, body shop fixed it.
but shortly after the driver side headlight stopped working for a couple days then it just went back on again.
now, she off again
I was hoping it was the bulb but after replacing that it is still out.
I removed the pigtail tried cleaning the contacts and put it in really hard but still no change fuse seems fine, is there anything else I could look for?

I've seen it blink on a couple times for a few seconds and then disappear