Max Stirner was a person who believed that everyone should be their own boss and they should do whatever they want. Just like how you like to play with your toys the way you like and not the way others tell you to play.
He thought that we should not believe in anything or anyone just because they say so. Instead, we should trust our own thoughts and ideas. It's like how you believe that your favorite color is the best and you don't care what others say about it.
Stirner also believed that we should not be limited by rules or laws made by others. Just like how you don't like to be told what to do all the time.
So, to summarize, Max Stirner believed that we should trust ourselves, do what we want, and not be limited by other people's rules or ideas.