Projector headlights, yes even halogen need to be aimed correctly!!! Don’t just go out there aiming them into the sky blinding everyone. It would be best to really verify if they are aimed too low. They should be correctly aimed from the factory, so if they are truly too low then somehow they got changed from the factory settings. Aimed too low then you have poor down the road visibility, too high and every oncoming driver gets blinded. Best way I have seen to aim projector lights is drive on a dark road and pay attention to where the cutoff is. On flat surfaces the beam should always be below other drivers. That’s the first step to make sure they aren’t too high. Then when at fairly good speeds you need to be sure they are high enough that you feel like you can see far enough down the road.
Then once they seem just about right, find a nice clean wall to fine tune them together. Each cutoff should mirror the other side.
Here is a picture of my custom LED projector retrofit I did in our 2015 Honda Odyssey. Pretty sweet cutoff!
This is how the beams should look when aimed correctly side by side. Then down the road output as well. You should be able to see the cutoff maybe approx 4-5ish car lengths out ahead.