Then the problem must be ahead (before) the headlamp (wiring, switch, fuse).
REPLACE THE PASS SIDE HEADLIGHT
If your light bulb is good, then it could be a wiring issue or a fuse issue. A fuse is cheap to replace, so start with that first. If after replacing the fuse, your headlight bulb is still not working, try a good bulb with your adapter. If it doesn't work, then it's wiring issue.
how to replace the headlight
Generally speaking, high beams and low beams are two different elements in the headlight bulb, so if one is burned out the other can still work fine. you will need to replace the bulb.
On older vehicles you replace the entire headlight. On the newer vehicles you just replace the bulb unless the headlight assembly is damaged.
replace the light module
How do you replace 2003 nissan maxima headlight?
Replace headlight bulb only when blown.
replace the low beam headlight bulb
How do you replace a 1999 Ford Escort headlight bulb?"
how to replace the headlight light assemble on a 2001 e320
“how to replace headlight bulb 2003 park ave”