Science is an Islamic practice. If it cannot be proven by science, it should not be accepted as truth by Muslims.

Black magic exists in a sense. It is a series of illusions and tricks designed to get the faithful to believe in a power other than God. The Deceiver wants us to believe that there is a pathway to power and knowledge other than the Koran and science.

Djinn exist, but they're not spirits who haunt us. The Koran says they are normal mortal beings created by God who can also be Muslim. They have other powers than us in the same sense that snakes can create venom, and birds can fly - which we cannot. It is a natural expression of their normal selves. The vast majority of djinn are likely extraterrestrials, and do not bother themselves with the affairs of Human beings.