> the various magic traditions developed very powerful psychological technics to achieve various things with your mind
This alone is reason enough to study/practice "magical" concepts, which can range from CBT to various forms of meditation and cue spooky sounds sorcery. Having a hammer with which you can form your own mind is, like, extremely important.
The spookier stuff you can just think of as either A) fun, existential decorations or B) embarrassing accretions to otherwise useful ways of thinking.
Or heaven forbid you fall into the C) camp where you start to believe you're in some kind of spirit war for the aeons.
Well, it is fun, when you assume those spirits to be friendly. But if they exist and they are not allways friendly - then there would be very practical implications because of that.
Is your bad luck random, or did you anger some god or spirit? Then you would benefit from doing things to calm them. Many, many people believe that.
But yes, the point is, why assume their existence in the first place, when science so far is very good at creating a working model of the universe. But since we do not have a complete model at all and maybe never will, I would not assume it is proven that billions of people on this earth who believe in magic etc. are all wrong. Because if you do that - then you would never find hints that they do exist. There is a theory in the spiritul world, that there is a mind censor in ourself, that is blocking all information on those magic things as we would not be able to focus on the tasks at hand, if we would be distracted by ghosts all the time. So main technics there, are how to control your inner censor and open your eyes to see and do much more.
Well, what I can say for certain, is that the various magic traditions developed very powerful psychological technics to achieve various things with your mind. Whether there is real magic one has to see and decide for themself.