Will someone help plzz?

I cant believe im resorting to the internet to help with my problem my issue is just its getting difficult my whole life (im 15) I’ve lived with two parents who hate eachother but stay together couse of me and my siblings and whenever they got in a fight with my moms brianwashing and sharp toungue I’ve fought for her and agianst my dad so much that I made my dad the hateed figure of the house, when my dad is amazing he works long painfull hours at cap a air condtioning company and goes on roofs at 100 degre weather and does back creaking manoul labor and never asks for anything in return (kinda ahaha) hes indian so is my mom and he was raised with indian customs, like the wife is in charge soly of maniging children and cleaning with kids, allthough I think thats not fiar I think its reasnable considering the massive imput he puts in on our family it wasnt till a week ago I started feeling this way though when I went to work with my dad for the first time it was amazing at work he was sooo respected for all his knowlage at air condtioning and I didnt know he knew that much. I have a little brother and 2 sisters my sisters being my moms little tails (ahaha I love them) they have geunine hate towards mmy dad they see him as an abusive old man who hates life. I recently confronted my sister on what she thought about our dad working sooo hard she siad “i dont care its his job to provide for us, he can choose to work hard or sit on his ass its up to him so it doesnt bother me” I had a shocked face I was thinking how can someone think like that and not feel any sadness knowing that a 48 year old man is doing bone breaking sweaty 12+ hours of labor a day and I’ve seen it first hand its impossible to do what he does. So currently I feel like writing this becuase my mom and dad are argueing in the living room when im in the bedroom and my moms winning becuase my other sisters are there backing her up and im afraid to go back my dad up over there as much as I want to ion the inside im a greedy little bith and im trying to change it but if I do walk over there them I know that my dad is never around hes way to busy and my mom ontrolls most of my life so if I cross her in a situation like this ill pay for it later when my dad isnt around man I know thats a lot of reading but god just by writing that I feel a lot better :d