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
Replace headlight bulb only when blown.
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