Feeling depressed, really need to rant

One year ago i’ve moved from England to Germany (my mums decision, I had nothing to say about this) and life has been hell for me ever since. I moved here when i was 15, I had to leave everything behind in England, I had lots of great friends, I was doing well in school and everything was just really good overall. I started school in Germany in may last year and i absolutely hate it. I only have one friend, I feel so alone and sad all the time. School here gives me literal anxiety, I only understand a tiny bit of what the teachers actually say. I don’t learn anything there. I feel like my future has been ruined, I’m currently about to turn 17 and luckily there’s only 2 months of this hellhole left and then it’s the holidays. But then what? I have asked my mum multiple times if I can move back this summer to start college in England, but she said I can’t move until I’m 18. I find that extremely unfair, since there is no point in me staying here. I constantly see my friends from England posting videos of them partying and having fun on snapchat while I’m sat at home every single day, doing nothing, it makes me want to cry. I feel like my life here isn’t going anywhere. I’ve literally been stuck in the same spot in my life for one year. Not learning anything new, not moving forward with my life. I’ve always wanted a boyfriend, but I can’t have that here since i barely know the language.

Jheez this was really long but really needed to vent and get this stuff of my chest since I have no one to talk about this with.