About keys and new crafting system

I want ask why i cant get keys? I played around 8 or 9 games and win 8 but still no keys. MY PREMADE FRIENDS GET KEYS ( 6 keys in 2 days ) and i get only 2 for 3 days of playing.. I was 15/0/10 and my friend was 2/3/10 and he got key and i didnt. What is problem here? I am not sure but this system is everything but not good for players who really care about this game. So I wanna told you i thinking about quit this game bcs there is no justice for everyone.. Peace.