Pls helppppp... Otherwise i will go insaneeee

So from past 4 years i am trying to achieve my goals (which i set throughout the time) and in starting 2 years you can say i was giving my best but everytime i tried to take a action towards my goals something wrong happens like i swear i tried my best but its always seems like luck is not on my side and then next 2 years like you can say i am not giving that best which I was giving before but i tried everything i can but now i am fully exhausted and don't want to do anything and my major problem is my family literally there is not a single day when my mother doesn't fight with me and spoil my mood and whole day then my dad like he has problem with everything i like literally everything if i do fashion or anything except studying and my brother is so annoying always humming something and so noisy but now he is getting better but my mom and dad is getting worse and whenever i tried to do anything something bad happens pls help me i am going insaneee and also my entrance exam is coming in 50 days so also give me some advice how to give my best in its preparation so i can get away from this house and this horrible people plsss helpp.....