Where to find a witch in Crimson Desert

Witches are one of the factions in Crimson Desert, and they're vital to your strength. They're knowledgeable about the mysteries of the abyss and capable of manipulating powerful artifacts called abyss gears. Crafting new gear and unlocking stronger skills are important for making your character more powerful, but you can take it to the next level and truly customize your abilities with abyss gears. The only problem is, witches are pretty difficult to find and get in contact with.