How quick nights ends

And when I am in the rollercoaster again, staying awake at sunday because I haven't seen the YouTube Video, but on monday as I Touch the bed fall asleep, suddenly my phone doesn't work and awakes me at 0:00o'clock. Now it's the ghost hour, here I am again, sitting at my math homeworks and don't know what to do. Since I wanted to Start with math completely new. But every week we get another topic. But I can't follow up. So I am here yet again, downloading multiple apps and searching through Google, hoping, someone or something to help me. Because my big sister can't be my savior anymore, she had been become an adult. When will I let go? And know, where to Start?