I am concerned about my scalp showing through my parting line. Should I consider getting a procedure?

I recently saw a photo taken from above, and I was surprised because my scalp was showing through the parting line much more than I expected.
I didn't really notice it usually, but it looked even more bare in photos under the lighting.

I wonder if my hair has simply gotten thinner.
I'm confused whether this is the start of hair loss.

I am wondering if this can be improved with scalp care or medication.
I would also like to know if I should consider a procedure.