One of the things I hate is (usually amateur stuff on YouTube) in which the person is getting overly scared even when it makes no sense.
Like they'll over act and start hyperventilating at a leaf and saying shit like "Oh my god what is that?!?!?! WHAT IS THAT?!?!" at like...a thud in the distance.
YouTube and Ghost Hunting shows seem to be the worst offender.
Another trope I hate is a horror game one but it's somewhat related; I hate it when the game tells you when to be scared by having a "sanity" effect or by the player character gasp or scream or whatever. Worst is if they have some kind of heartbeat sound effect that plays when you're supposed to be spooked.
But yeah, if a character starts saying shit like "WhAt ThE FuCk WaS ThAt?!" then I just get more annoyed than scared.
Fakeout jumpscares - For example, in The Woman in Black, there's this scene where the protagonist's stumbling 'round this mansion at night and the tension violin stuff is going full force like something spooky is about to happen and... then he turns on a tap and it makes a startlingly loud noise. That was it, that's the scare.
(Dis)honorable mentions go to: black characters always dying first, female victims of slashers being used for titillation, ghost movies where 90% of the film is just empty tension (fuck you Paranormal Activity), scene where the monster's whole deal is explained in unnecessary detail, exorcists/spirit mediums being portrayed as heroes and not the exploitative parasites of human misery they are in real life.