Short Stories: Dream and Its Complex and Disturbing Contents

So, I had a flash of insight and decided to put things to the test. "What are the things that you really find disturbing, and how can you make a story out of them?" I struggled to answer this. Many new authors (perhaps) and fanfic authors are troubled by this as well, because every time we came up with a story about disturbing things, deviant actions, or things you wouldn't find yourself imagining or doing in your real mundane life, we had to come up with a background for it. A very fantastic unsettling story, in my opinion, is something that you can't explain, something that has seemingly random moments that have no link to the story yet have a deep meaning to it. I'm not sure, I still can't answer the question.

This is how the test short story came to be. Please provide me with a structural review if possible.