How should i change myself or what should i do?

Last year during my most busiest semester i broke up with my bf and was going through problems with health and family. I reach out for my friends but everyone instead betrayed my trust and i lost hope in life. i cried 3 days straight and left my past world to look for new beginning. Well long story short...now i am feeling like i am all alone, can't trust anyone and don't know how to talk to people. What should i do? i need friends, i need to live again but i am so scared too. I feel like i lost all my coolness and don't knw wat to talk abt. i don't wanna gossip, i feel like that's what my friends do...they ***** abt each other to another. i am so busy with school and work too.