Fright Night (1985) is a teen friendly low budget comedy horror that feels too dated and doesn't quite work because it is too silly. In order for this to work the characters have to be more believable than this, although the late Roddy McDowell does play a comic character rather well. It is the teenage characters who seem absurd. The only really good actor in the movie is Roddy McDowell.
If you accept that the whole thing is a light hearted farce then maybe the movie would work for you, but I didn't think that it was quite good enough.
There is a certain irony that McDowell plays a down-on-his-luck actor who only ends up chasing vampires because he needs the money. I wonder if this is also the reason why such a distinguished actor chose to play in a teen horror comedy?
There is a 2011 remake that might be interesting.