Basically, The Moon Tarot card means something does not make sense or got mixed up because of a misunderstanding. That does not mean you did anything wrong. It simply means that you need to start looking at things with a little more imagination.
The Moon, simply put, is the counter-reaction of all people. Think of how when the Sun sets, the Moon rises. The Sun begins an action and the Moon reacts to it. The Moon in astrology, in addition to controlling reactions, also controls basic habits, personal needs, and people’s unconscious.