Forget nything that almost any tv show has ever taught you, almost nothing they do can be done by us mortals. It's impossible. You must clear your mind of all that garbage and start a new data base on magick. Understand that magic can only help make out life's easier and more comfortable, not perfect. And be wearry of the dangers it holds
Almost everything you have seen in tv or movies or read is meant to entertain and isn't very factual. Charmed being a prime example of this. Magick is energy found in nature, it works inside the confines of nature, so if the spell you want goes against nature, it won't work. Humans can't freeze people [unless they have a bunch of water, a freezer, and a lot of free time] so there is no spell that can cast a freeze ray or something of that nature.