For magick to work, you must believe in it, it sounds cheesy, but it's a simple way of explaining it. Magick utilizes energy and willpower to subtly manipulate some forces around us.
Yes, this stuff is real, but mostly useless if you haven't gone over the basics like meditation and energy manipulation. So if most of the spells and rituals don't work, or it's just a coincidence, that's simply because you haven't correctly been practicing it.
Like anything, it takes time, patience, dedication, and most importantly, practice.