Okay, kiddo, so Azazel is a character from some stories that people used to tell a long, long time ago. Some people believe he was a kind of spirit or demon who liked to do bad things and hurt people.
Imagine you have a little voice inside your head that sometimes tells you to do something you know you shouldn't, like taking a cookie from the cookie jar when you were told not to. Well, some people believe that Azazel was like that voice but much, much more powerful, and he would whisper wicked things into people's ears to make them do bad stuff too.
Now, not everyone believes in Azazel or thinks he's a real thing, but some people do. They might think that he's out there somewhere, causing trouble and trying to make people act mean or cruel. But remember, it's just a story, and it's up to you whether or not you believe it.