1. Different social preferences: They may be more inclined to be alone and introspective, enjoy personal space and time, and not rely on social activities to meet emotional needs.
2. Social anxiety or fear: may avoid making friends due to fear of rejection, worry about not being able to integrate or handle complex emotions in interpersonal relationships.
3. Busy or focused: Devote all energy to work, study, hobbies, or other personal goals, leaving no time for social activities.