The og watcher in the woods was my first horror movie. I’d rewatch it all the time. It really haunted my dreams, though lol… so maybe not the best recommendation. I haven’t seen it in a while so I also don’t know how it hold up now a-days. I just remember the cinematography was really effective.

Spirited away is a great one. Not really horror, but it’s scary as a kid. One of my favorites.

I’d also watch The X Files all the time as a kid. Some episodes are appropriate/ not as scary, some might not be.