Alone alone alone

Somebody I’m close to is moving away so this fall I will be by myself. I’ve already said I’m homeschooled and I literally have zero friends-I don’t even have acquaintances. I’m really worried and depressed because I’m already depressed but it’s going to be even worse this fall. My parents would never put me in school so I will have nothing to do or look forward to all year. What should I do? How am I going to be able to cope when I already can’t cope right now?