This is one of the main problems with them. People install the new headlights themselves, or get it done at a cheap place where the mechanic doesn't care, and nobody actually adjusts the angle of the lights like they are supposed to do.

Almost all new headlights come with instructions on how to calibrate and align them by using a wall in front of your vehicle. These instructions aren't always easy to find if you aren't aware of them, to be fair.