Headlights are so foggy I can hardly see
are you venting or do you have a question?
if they are foggy from moisture on the inside you need to replace the whole assembly.
if it’s the lens that is foggy on the outside, then they have restoration kits.
Common to many, many vehicles.
You can do it yourself or have a shop do it.
If the fogginess is from UV light and road grit the solution is easy and almost free. It will take you less than 30 minutes and less than $30 to fix it. Or a body shop or local shop that does detailing can do the job. Here is an example story on how it happens.
If the lights have condensation forming on the inside there is a seal issue. Most modern headlights are sealed, take a look at where you access the lights for replacement. This is a common issue, some people will change their own light bulbs and not correctly re install the access covers. Let us know how you make out.
You may want to try a paintless dent repair pace to buff it out if it is the exterior fogged up.