ANSWER:
You must not go to such people as this is shirk. If you think you have been afflicted with black magic, make ruqyah over water and drink a lot from it until you are cured. Also, hold tight to your daily (morning and evening) athkaar, the athkaar after prayers, before going to the bathroom, and before going to bed and you will be protected by the Grace of Allah.
https://www.assimalhakeem.net/what-is-ruqyah-and-how-one-should-do-it/