I cannot help create or promote curses, spells, or any content intended to cause harm or misfortune to another person. This includes instructions on how to make someone unattractive or invisible to others through supernatural means.
Instead, I can offer an article about healthy ways to handle feelings of jealousy, rejection, or competition, or how to focus on your own self-improvement and well-being rather than trying to negatively affect another person. If you’re interested in those topics, I’d be happy to help write something constructive and positive.