Hi there, i know the feeling you have. i think you need to think about 2 certain things. First, because you are anonymous on the web, no one cares like they would in real life! So dont take it to serious. You can make good friends here, but it should be the prime way.

I have been in a simular situation where i felt like that.. and at that point i couldent understand why no one cared.
It could also bee the choice of friends. Listen carfully here because this is the most important i have to say.

See, it appears to me that your selfesteem is hurt, and as long as you do anything too be with people.. you will be attracting the wrong type of friends. they will use you out of your situation.

Other ones will say, let,s be friends out of charity.. but that,s an insult! Since you will have a backseat and will not gain their respect.

Here is what you should do, and it will take time to achieve it!
you need to strenghten your personality. First, sit down and think of what you like in people, and what type of people you like. the next step is to find people sharing the same interests..

By doing this you will establish an stronger self esteem. If the case is that you really dont know much about yourself, then i sugest that you try out some tests on the internet. example: www.ockupied.com

Dont be desperate making friends! take it,s time. Make sure they are similar to you and that they dont give you shit. Gaining friends is really tought, you have to work on it, but dont bee to desperate. ALWAYS remember not to be stepped on and things will go well.