i have NO friends outside of school?!?

[.]

so ill keep this question short
i went to camp
i dressed nice
i was really nice
i tried to make small talk with peoplee. i tried to socialize with everybody, and i especially tried to get to know the other girls new to camp like me.
but people didnt make an effort to talk back, infact sometimes i would be trying to keep the conversation going and they would turn around and start talking to their other friends (rude!!!!). it was like they DIDNT want to talk to me, and they barely even knew me?
i especially tried to become friends with the other more popular/outgoing girls at camp, but then again, EVERYBODY was trying to become friends with them. the other new girls (like i mentioned above) were so desperate to try to talk to them that it was creepy
the popular girls were even harder for me to talk to.. they were outgoing, and they were really hyper and funny, just like me. but they already had their group of friends and didnt bother to talk to other girls like me. i looked shy from the outside, but in reality i am very outgoing just like them.
i was so desperate to come back home from camp, because i was so lonely, i almost started to cry on the bus ride home because i was so relieved to get away from that place where nobody cared about me
when i came back from camp, all the girls added each other on facebook, but for some reason everybody skipped over me and i didnt even get one friend request... and they clearly know who i was!
should i go back to this camp next year?i mean the counselors were really nice (they were they only ones who noticed i was lonely and sad) and the activities were really fun, but nobody wanted to be my friend. if i do go back to camp next year, who should i try to befriend? the girls trying to become part of the popular clique, or the girls from the popular clique?