Friend drama.. Help? Short?

[D6L4R]

I am 13 years old and I feel like I can't trust anybody. I have no true friends. My old best friend has moved on to this girl named Ashleigh. (I have a new best friend, Balie, but shes moving in april ): Okay so well Ashleigh, she gossips about every single on of her friends, even her best friend Nacie, who they have known each other forever!! And I hate this because my old best friend(Riley) is so sweet and nice and now shes starting to get Ashleighs personality(Disrespectful, cocky, smart-*** remarks, mean, gossipy) And the thing is all my other friends wont stand up and say "Ashleigh please dont talk about them, they are my friend" they all kiss her ***. She is the only one I have a problem with.. And she is always having friends over but she leaves me out, idk whyy. Because Im nice to her, but I just dont know.. I feel so lonely at home all by myself where I can just let my mind wander, I get super sadd.. And inside I just feel like, depressed, like no happiness, and i feel anxious.. Idk what to do.. Please help???