Are there sorcerer doctors, and what should we do if someone denies the existence of magic and believes it to be an illusion or a trick of the eye?

Magic is a reality that affects hearts and bodies by Allah's divine decree. It is a satanic act that often requires polytheism and drawing close to jinn and devils. It is forbidden to go to sorcerers or soothsayers; it is considered disbelief in the one who goes to a soothsayer and believes him. The Prophet, peace and blessings be upon him, forbade going to them and believing them. Magic is not an illusion; its reality is evidenced by Quranic verses and prophetic hadiths. Its types are numerous, including those that rely on the use of devils, sleight of hand, optical illusions, and the use of chemical substances to deceive people. None of this occurs except by Allah's predestination.