What is the scariest horror movie that you have ever watched like in your entire life the one that freaked you out the most the one that made your skin crawl or the one that you just cannot sleep after watching

Maybe not the scariest movie but I'm going to suggest you watch a movie called the lady in White it was a 1988 film Lukas Haas is locked in a school clock room and he needs to go stand it goes from there pretty cool movie