Why doesnt anyone care about me? is there something wrong with me?

There is nothing wrong with you. People are just generally ******* and use people for their own personal gain and then they toss them aside like garbage when they're done. It may take a little while, but I'm sure you'll eventually find some decent people who deserve to be friends with a nice girl like you. It's not your fault, its other peoples fault and you shouldn't beat yourself up just because some people can't just be kind to others