Uneven and unfair matchmaking

What are you even doing? One team gets 4 assasins and a tank and the other 3 assasins support and a tank and it impact the game massively. And that is one of the ways it goes. One team can get double tanks or double heals. And it gets worse than that very often. “oH JuSt Go UnRaNkEd” yeah and grow from 17 years to 30 in 2 games from how long the matchmaking is.