Starting to feel suicidial. I need help asap.

(Italian 15M) My dad is always mean to me. He always threatens of beating me if I don't do what he wants me to do. He also controls how many times a day I go to the toilet and gets angry if it's too much. He always gets pissed for everything, even minor stuff. One day I was repairing the plug of a washing machine and he got pissed because I was taking too much time. My mother and my brother always snitch on me when I do something he doesn't like. I asked for help but people justified his actions saying that he's just stressed and that being a parent is difficult. I remember being scared of my dad as a child because he was the one who punished me more. My brother is only 11 but he's bullying me. He always insults me and he mistreats my cat to piss me off. My mother always tries to push her religious beliefs onto me, and she can't keep secrets, she always tells everything to my father. I'm not comfortable in my own house, I can't trust anyone. I can't even play videogames because if they see me they get angry. I started to feel suicidial around a month ago. I'm thinking about stealing my mom's car at night and crash it to kill myself, or using my moped to do so. I have nothing to live for, I won't feel guilty for emotionally hurting other people and the only reason I haven't killed myself is because surviving an accident with road rash or permanent damage scares me. The idea of ceasing to exist consoles me. Life seems unnecessary to me because in the end everything will vanish, so I might as well finish it now. I'm scared because of this, a part of me loves life. I love and hate my family at the same time. No matter how much they mistreat me, I always feel guilty for hating them because they can be nice sometimes. How can I get help?