^ how can one be very social yet have very low self-esteem? :/
There are so many facets to this that it's impossible to conjure a one explanation covers all solution. and furthermore, each person is different, unique, so the same issue will have a different flavor. One of the reasons why I am so against psychology, they love to put people into neat little categories and impose absurd ideologies on them. Your situation is an example a shape against the grain of thinking.
just walk around alone with your thoughts and realize that humanity is nothing but trouble and poison.