have your headlights been changed recently? a couple years back, my dad had an issue with the frames not being properly adjusted after changing bulbs and it did make a significant difference in brightness.
not recently, no. (my sister wanted us to drive her car, so it's not mine at all. BUUUUT if it doesn't get fixed, the ticket/fine goes to me because I was driving)
this is money I really didn't have to spend ugh