The belief is that magic is a natural energy that we can utilize to help us through spell casting. You need to study and understand this natural energy does have limitations, and it is not an instant change which manifests before your very eyes like in popular culture. Magic effects the energy around us to bring the change, whatever it may be. You cannot defy nature, so if you are planing to cast a spell to, lets say, grow wings, don't assume all magic is fake because that spell cannot work. As humans it is not in our nature to have wings, so magic cannot do this. If you want to attract love into your life and cast a spell, this is far more likely to work since you are sending out a beacon to the Gods/universe you want to meet someone. The spell then works to create the opportunity for you to bump into this special someone.
Overall, magic works similar to prayer, you focus and ask for something. Don't be upset because magic isn't as amazing as it is portrayed in shows, study, try a few, and draw your own conclusion. Just don't rely on magic to solve all your woes either. Its to help when things are rough, not to make life easy or perfect.