Suggest Treatment For Anxiety And Depression In A Teenager

hey i m a teenager of 8 years old and i m suffering from anxiety and depression. Till now i haven t gone to any psychiatrist because my parents don t know about it and it s hard for me to tell them lie and go for check up. My past was so bad and i m not able to forget it and it really is effecting me nowadays. Loud sounds, shouts and quarrels that frequently happens in my home, and i m not able to handle it, it makes me cry all the time and i feel so weak and i shake so hard when i cry. I m so lost and blank. Because i have no any other option so i m looking for online free help, so please help me. Hope you will make me myself and change my life. Thank you.