my dad isn't giving property to my uncle and it has created so many rifts in the family

so my grandfather was big farmer/zameendaar , he had 80 acres of land and farming was main source of income in our family when my father and uncles were kids .Grandpa had 4 sons( lets name uncle1 , uncle2 , my dad and uncle 3 ) out of uncle 2died very early leaving his wife and one kid . My parents lived with dada-dadi for all life , uncle3 is in abroad and uncle1 moved out with his family long ago who is eldest son too . uncle1- moron , utterly selfiesh and what not .he is reason to all the conflicts in the family , grandparents were never happy with him uncle 2 - died very early ,was good man but his wife (my aunt) was/is bitch , she extorted money from my grandparents all their life in name of my cousin and had many affairs with married men. threatened my family for years , she did not even come to my grandparents last rites when they died lol. my dad- decent man , no issues uncle 3 - again very nice , no issues so some decades ago during time of land reformation when farmers with big percentage of land had to give up on their land , my grandfather randomly redistributed his land immediately to save from govt and put it on his kids name , apparently each 15 acres without much thought and 20 acres to him . now after decades later , today the land owned by my dad and uncle3 is valued 10x (12-15 crores per acre now and increasing very well ) the land owned by uncle1 and widowed aunt (2-3 crores each) , initial plan as per my grandfather was that when all this will be divided my dad and uncle will give some share of expensive land to them in exchange of less expensive land ,also my grandfather never made a will or anything . all went smooth in all these years and everyone was busy in their lives since farming is no longer our source so no one bothered it much and kept holding the lands , all was on control of my grandfather . now 5 years ago my grandparents fell severly ill and bed ridden for 2 years , none of my uncle came except my father who was primary care taker to both my grandparents and uncle3 who tried his best to help financially and did everything he can do . uncle1 and aunt did not even come to see my grandparents properly in these 2 years , it created huge ruckus in family and after the death of my grandparents they even blamed my dad that he used all my grandfather's money in bank which was balant lie coz there isnt much money in the bank and whatever it was used in grandfather's expensive treatement and care in these 2 years . my uncle3 and dad had refused to give them share of expensive land seeing their behaviour in all these years , apparently they can't do anything since its already in my dad's name and my dad and uncle3 will also get share from my granfather's owned 20 acres. I am just 19y old , cant do anything in this and not bothered either but I am concerned for my dad , my uncle and aunt are bitch to next level , even aunt's family member were in jail for scam . This also has created rift with my cousins which cannot be solved now , we dont talk anymore and it is so sad to see all this .