One of the classics

Can anyone please suggest me maybe one of the movies that every horror movie enthusiast has seen and is good. I was into horror a lot when younger and I have always love psychological horror more than anything. And focused on the creepy side - not violent, idk how to describe this sentence since it is horror, but maybe someone gets it. When I was a kid my favourite one was “mirrors”, loved it sm. Because it was psychological and involved psych patient and I kinda like those themes a lot as well. When I was a kid I was obsessed with “the ring” because of its psychological background. Though as of now (since I have grown up) the ring seems quite soft and my mind has gotten way darken than that.

So keeping all this in mind.. Maybe someone has any movie recommendation? Anything..? Please..? Thank you <3