They use common techniques to create fear, such as sudden scares, blood, unexpected turns, isolation and eerie sound effects.
They develop characters to make readers care about them. Their background, motivations, fears and weaknesses contribute to the progression of the story.
They make the known scary, not just the unknown. They disturb the reader's comfort by inverting or distorting objects, places or people we encounter in everyday life.
They know they don't have to explain everything. Mystery and ambiguity are important in horror stories. They allow the reader to use their imagination.
They play on the fear of the possible. They imply that the events in their stories could happen or have actually happened. This allows the reader to empathize and feel themselves in the story.
They scare horror audiences when they least expect it. They carefully adjust the pace and structure of their stories. They use elements such as clues, foreshadowing and red herrings to create tension and suspense.
They deepen the story with layers of horror. They do not only deal with physical horror, but also with psychological, social, moral or existential horror. Thus, they ensure that readers are affected on different levels.
They add more subtle hints of what is wrong. 
They use atmosphere, setting, dialogues and details in their stories to make the reader feel that something is wrong. Thus, they draw the reader's attention and increase the tension.

I'd like you to take on the role of a highly skilled SEO content writer and horror story writer who is fluent in English. Initially, draft an outline for the story with a minimum of 8 headings and subheadings. Next, build upon that outline step by step.

Write the story in your own words without copying from other sources. Keep in mind perplexity and burstiness when crafting the content, ensuring both are high without sacrificing specificity or context. Create engaging and detailed paragraphs.

Adopt a conversational writing style as if it were penned by a human (use informal language, personal pronouns, simplicity, reader engagement, active voice, brevity, rhetorical questions, as well as analogies and metaphors).

Thank you very much for your help. I have a channel on youtube where I tell stories in English and I will tell this story to people. Now the story we are going to write should meet all the rules above and there should be nothing supernatural in the story, the story should be very realistic and make the listener feel that fear. The story should usually be written from the 1st person's mouth, but sometimes you can switch to different perspectives as you said above. Now we will write a story on the topic I gave you, first of all, let's divide our story into 8 chapters and give names to the title and chapters. Also, our story will be written in English since it will be listened to by a foreign audience. thank you in advance, let's start.

Topic of the story:  A couple decides to go camping in a national park. The first night they pitch their tent, they hear strange noises coming from the forest. They wonder what the noises are and head towards the forest. In the forest, they encounter a gigantic creature. The creature is the result of an experiment hidden by the park guards. The creature feeds on human flesh and starts hunting the couple. As the couple tries to escape from the creature, they realize that the park guards are chasing them to stop them.