Dark side of the moon | psychological horror and thriller

Psychological horror has a strong bond with thrillers, most of the time it is hard to fall a single film into only one of these categories.
Whether gothic, gore, occult, or even a thriller, all these movies have a bold psychological aspect of which you can’t be sure if the terror is the byproduct of one’s mind or not.
I’ve tried to list various psychological horrors and thrillers I’ve known by far but I can’t say that all these films are among my favorite horrors and thrillers. Nonetheless, I think it’s necessary to watch them in order to understand the big picture of psychological horrors and thrillers.