What can I do if my mum literally hates me?

Yesterday (22nd October) I had a massive argument with my mum after school about my school grades (because I’m keep getting bad scores no matter how hard I try) and my progress in music theory (I have an exam on November and she thinks I’m not doing more efficiently as I’m supposed to do but I am) and I feel brokenharted. Most of the time the only thing my parents think about is money and honestly I think they like my younger brother who is 2 years younger than me (I’m 12 years old). She thows stuff such as books, coats and other random objects towards my head, hits me and calls me as pea-brain, fat etc and I feel so bad about it. If I shout at her or my dad, they try to drag me out of the house so I can’t scream or swear or shout at them even though I want to. I literally cry of depression every day and they never forgets what happened and keep using that bad memory as an excuse of me getting told off. Today, I think my dad forgave me a bit because he says stuff to me in a nice voice but my mum says nothing to me whenever I’m near her and always slams the door behind her, never turning back to me. I feel really depressed and I wasn’t allowed to go to bed early even though I was really tired after school. Nowdays I just stay in my room, going on my phone secretly without letting my parents know (that’s what I am doing now) and cry silently. Yesterday I searched to Google ‘how to suicide’ then I just thought that God wouldn’t want me to do that (I’m a Christian) so I just stopped searching ways to suicide. What can I do th make them feel better or at least make me feel better?