There are different genres of horror. Personally I like mid to late 1970s. Think Halloween with Jamie Curtis, or When A Stranger Calls.

Don’t be afraid to dig into the past, like John Carpenter’s version of The Fog. Or Tobe Hooper’s mini series of Salems Lot. There’s also the 70s classic, Carrie.

If you want to go further back, there are some fun anthology movies from the 60s like Twice Told Tales with Vincent Price.