Magic is a very broad category. There are many kinds of magical arts. Magicians mostly specialize in a certain category. David Copperfield is a stage magician. Harry Houdini was an escape artist.
Most magicians start their career doing close-up magic.
Their careers then build higher and higher from then on. Houdini started his career doing card and coin tricks, and then changed to stage magic. I limited to close-up magic, because I don't have assistants and can't afford the props needed for stage illusions. The bag can be found at any magic dealer, and the gimmicked box can be made with wood and a saw.