How long does foster care usually take? I just wanna go home.

I (15f) have been in foster care since about December 27th of last year. Aswell as my 7 other siblings . It's been such a mess but we're all in the same house right now with her other 4 adopted kids. It's not bad here at all there nice and they take care of us blah blah blah but that's not the point. Point is we keep getting lied too hearing it's gonna he from 30-90 days and now it's 1-3 years. And I'm gonna be grown soon and there's no way I wanna spend the rest if my childhood here I'm so sad I miss my family I can't even see my aunt or spend the night with my friends literally even go to the mall anymore. And now my relationship got dragged into it I've almost lost him too I'm just so so lost and so so sad I just need someone to tell me it's going to be okay and that I am going to be make it to my future and have my own life and this isn't the end of everything.