Why is my brother not communicating with colleagues?

Name: AaravDate of Birth: 15th February 1996Place of Birth: PuneTime of Birth: 6:40 AM

My brother does not socialize with other employees at work. He remains reserved even during meeting sessions, he does not want to speak, and appears embarrassed by being around other people. By this, I believe that his Moon or Rahu-Ketu placements may make him sensitive to social energy. I would like to study astrology to understand why he is experiencing difficulties and how to be sure and feel comfortable in his profession.