Ranked is absolutely broken

i want to speak with a human, i have a 47% win rate, 8,5k healing done/10mins, 17.5 kills/10mins, 15 asists/10mins AND THE GAME WONT RANK ME UP FROM GOLD 2 AND IT JUST RANKED ME DOWN TO GOLD 3, I AM A HARD CARRY MOST OF MY GAMES AND IT JUST RANKED ME DOWN?! IT DOESNT EVEN SHOW ME MY SR?! i am done