Cure
Easily one my favourite and best psychological movies i have seen. Despite being slow it has one of the most interesting and captivating plots, which always keeps you wanting to see what will happen next. It has such an atmosphere, which is what creates the horror, it doesnt rely on jumpscares and gore, but atmosphere, psychology and its characters. Another thing which I love about it is how its shot, the eerie set designs and the camera movement, great cinematography in general. Its deeply symbolic, the ending especially, completely unexpected to me. Very dark and bleak movie, 100% recommend especially if you like movies like Se7en and Memories of Murder.