Movies that will make me unable to sleep for days

Hi everyone! I have watched more than 70 horror movies and still haven’t found one that actually made me really scared. The only movie that made me unable to sleep for days was Incantation. After watching it, I kept feeling like someone was watching me at night. I was really scared, like actually scared scared. I wasn’t able to sleep properly for 3 days. Please suggest me some horror movies like that. I want something that will truly disturb me..