I would think it would be simple but it might be compound. Hope this helps somewhat
Usually what element helps you identify the theme of a story is what lesson the main character learns, or any important idea or refrain throughout the story.
<span>Superstitious people might do many odd things because they believe in luck, or bad luck. So, they may retrace their steps if a black cat crosses their path, they may not want to walk under a ladder because it is sad to bring bad luck, they may be scared when their mirror cracks because it is believed to bring 7 years of bad luck. They may do many things to get out of a possible bad situation, or induce a good thing to happen to them.</span>
I don’t need friends they disappoint me