Are there any horror movies out there that are actually scary
Discussion
It's called fiat madness.
I remember something from long ago called The Blair Witch project, although I think you had to be there.
The Shining
The Ring
The Exorcist
The issue with all of the above is that you need to really immerse yourself in the film before it's scary. So kind of suspend critical thought. And turn the lights down. Watch it alone. Etc.
Hereditary