Is the suitor sinful if he divorces the girl after the marriage contract, having discovered that her true appearance is completely different from the picture that was sent to him, and is it possible that he has been afflicted by magic?

Divorce for a young man is permissible, but it is better to compare the desired qualities in women (religiousness, character, lineage) and not to divorce solely due to a lack of beauty. Patience with a woman of virtuous qualities, despite her lack of beauty, is preferable. As for the issue of magic, it is not within our purview; specialists in ruqya shar'iyya (Islamic exorcism/healing) can be consulted, bearing in mind that ruqya shar'iyya can be performed even if a person is not afflicted by magic.