Constant arguments

My parents are constantly and I mean everyday arguing with each other, there has been incidents in the past with my dad that has put my life, my mums my brothers and my best friends life in danger, my mum also has mental health and them incidents pushed her a bit to far and its all gone backwards, I’m also finding that I’m scared of my dad I can’t talk to him or my mum and my extended family don’t talk to us anymore. My mum is in a very bad place and she ha seven for a phew years now. Idk what to do I can’t talk to ppl about my growing anxiety, largely worrying and my dying wish to punish myself bc I now think it all stated bc of me ! Idk anymore I’m 14, I have a lot of empathy and I constantly feel like it’s my fault and they feel bad as they think they r effecting my by there arguing but can’t tell them that bc it will hurt and ruin them even more. It hurts to see my mum cry and say she exhausted, tired and that she don’t what to do this, but I don’t want her to leave me with him but I want her to go so she can focus on herself. Sorry if this don’t make sense but Iv had this for years now and I’ll how to cope.