What do you think is wrong with me ?

Focus on being yourself, and if you do not know who you are yet then take time and do things that can help you discover that like new experiences, do not follow with what people would want you to say act or feel because at the end of the day it's you that matters. Just remember to be yourself, and do not get upset if someone does not reply to you, they may be busy or just may not want to reply but don't take things to personally.