Having issues with my father's behaviour

I m 25 M, Final year MBBS students, I am having some family issues, my dad and mom is having fight, my dad thinks he's always right and he's is emotionally unavailable man, she fights with my mother and always makes her cry, it kills me, I can't say anything to him i tried many times but he never understood and start fighting with me also, he never abuse neither physically nor verbally, he neither drink nor smoke, he has a very a bad company of friends they tell him that he should treat his wife and kid like this, he doesn't even acknowledge the sacrifice of my mother for his family, my mother is a teacher and he is also a teacher but he never acknowledged my mother's efforts and jocking even mock her, by watching this it kills me. I don't know what to do.