Dark and eerie settings play a big part. Think of an old, abandoned house in the middle of a forest at night. The creaking floors, the howling wind outside, and the dim light create a perfect backdrop for a very very very scary story.
Unexpected twists can make a story very scary. For instance, when you think the main character has found safety, but then suddenly something even more terrifying happens. Also, the presence of malevolent entities like ghosts, demons, or monsters, especially when they have the ability to harm the characters, can make a story extremely scary.
Once upon a time, in an old, abandoned mansion on the outskirts of a small town, there was a creaking sound that could be heard every midnight. A young girl, curious about the place, decided to explore it one night. As she entered, the door slammed shut behind her. She heard whispers in the dark. Suddenly, a cold hand touched her shoulder. She turned around but saw nothing. The air grew colder and colder as she made her way through the dark corridors. Every step she took, the floorboards groaned as if they were alive. Then she saw a figure in the distance, a pale figure with glowing eyes. Terrified, she ran towards the front door, but it was locked. She was trapped with the unknown horror in that mansion.
Use vivid descriptions. For instance, describe the monster in detail - its rotting flesh, its blood - red eyes, and its sharp claws. This will make the reader's imagination run wild.
One example could be the story of 'The Bloody Mary'. It's about a girl who died in a tragic way. Legend has it that if you say her name three times in front of a mirror at midnight, she will appear and bring doom. Another is the story of the 'Headless Horseman'. He rides through the night looking for his lost head, and if he spots you, he might chase you down. And there's also the tale of the haunted asylum, where patients were tortured and their spirits still linger, causing strange noises and apparitions.
A group of hikers got lost in a forest. As night fell, they noticed strange markings on the trees. They then heard howls that didn't sound like any normal animal. They started to feel like they were being hunted. One by one, they disappeared until only one hiker was left, running for his life, not knowing what was chasing them.
Scary stories can make people feel a sense of fear and unease. They might have trouble sleeping after hearing one, as the images and ideas from the story stay in their minds. For example, if someone hears a story about a haunted house, they might be afraid of the dark or being alone in a quiet place.
The unknown. In a very scary ghost story, it's often the things that we don't understand or can't see clearly that are the scariest. For example, a strange noise in the middle of the night, or a shadow that moves when there's no one there.
The element of the unknown. When we don't know what's lurking in the shadows or what's going to happen next, it scares us. For example, in a story where a character hears strange noises but doesn't know the source.
I don't really know about kmjs horror stories specifically, so I can't say for sure if they are very scary. It depends on a person's tolerance for horror.