The rules for this subreddit are that we are not literally explaining things to 5-year-olds. "Explain like I'm five" is an expression that means "please explain this simply to me."

There are other subreddits that are literally about giving explanations on a 5-year-old level. But this one's rules are that we are writing for the adults who are actually using Reddit. Not for a theoretical child.

Also, many of the things that people ask here aren't very easily summarized on a child-friendly level.