I need help in life .... please .?

kso , where do i start ... my ex-best friend Jasmine told me she bought weed for me and her and Judy to try .... i didnt accept it and ignored her for a whole week til she apologized to me and said she would never do it again . me and my other ex-bestfriend Judy used to say we were "bad-***" cuz we would talk smack to teachers , get detention , and all that . til she took it way to far and started doing weed and puting pics on facebook of her sticking up the middle finger and in an undershirt ... she never seemed like that person to do that stuff .. so i got kinda mad and txted my go-to friend Amanda that she's kinda pissin me off . but then Judy of course was playing with Amanda's phone , and saw that message .. then me and Jasmine went to lunch together and i told her EVERYTHING that was on my mind ... mostly about Judy cuz i thought i could trust Jasmine ... we would always say we were sisters .., but then Jasmine told Judy EVERYTHING i said about her ... then Judy got even more pissed off at me . and called me 'two-faced' . which i probably am . i know all of this cuz of my bestfriend Saisha tells me everything ... so then my bestfriend Autumn wanted me to tell her everything thats going on .. so i did .. then judy hacked autumn and read our convo on facebook .. and texted me saying "im so done with u" and "all u ever do is talk behind ppls backs" which kinda put a smile on my face cuz i found out that she was that much of a pu**y she couldnt confront me ... x] . i have lost 2 friends so far .. now , my friend Autumn is starting to ignore me and i dont know why ... so i have lost 3 friends ... and im drifting from my friend Amanda ... so i have lost 4 friends in total ... plus im failing school ... which means im probably gonna have to repeat grade 8 again ... any help on how to keep my head high ? i really only have about 5 friends right now .... im not really popular .. all my friends are starting to go to drugs , and i dont wanna go down that road ..