Recently I had a fight with a friend. She manipulated everyone against me and now no one is talking to me. What do I do?

Recently, me and my friend got in a fight and we both have distanced ourselves from each other. However, ever since that has happened all my friends are acting weird towards me now, they don't respond to my texts and always say they are busy. She has stolen all my friendships to the point I have no friend to talk to these days. She even took my BFF from me by manipulating her, I know that because me and my BFF were extremely close before that, we used to call each other every night and hangout mostly everyday too. But now she hangs out with her everyday, keeping in mind we both didn't have a huge amount of respect towards our mutual friend, she has distanced herself from me without giving me an actual reason. She never calls, and when I do she's always busy. When I text her, either she responds after 3 days or never responds. I cannot just leave everyone as I find it hard making friends.