I'm not sure why, but I enjoy watching horror movies and am not afraid of them. At Halloween, one of my favorite films is The Chainsaw Massacre. It stars Jamie Lee Curtis as a schoolteacher who falls in love with the murderer.
This film is about a serial murderer who escapes from a hospital. The narrative takes place in a children's camp on Halloween and is both terrifying and intriguing. The film does not have a happy ending because all of the innocent characters die at the end.
The film was done on a budget, yet it was well-made; the camera work, sound quality, and so on are also excellent.
According to the reviewers, the film is extremely disturbing, maybe the scariest movie ever made, and I agree.  This is a great horror film but you shouldn't watch it as it is extremely terrifying.