You seem young, like college-age, and if that is the case people as a whole are only looking out for themselves at that age, although some rare exceptions exist. If people feel think they can't gain anything (popularity, attention, a job or a hook-up for something else) from you, then they generally just pass over you. Few people will be friends with others simply because they enjoy friendship during college, and the same generally follows in life in general, although it's not always the case.
Take your time alone now to develop yourself and your strengths and skills. Then, in a few years when you are very talented at something, people will want to be your attention and you get to make the calls as to who you are friends with and who you are not friends with (a great reversal of power). In the meantime, life can be hard, but you can do it with the help of people on this forum and your family!