Please Fix this Matchmaking (prio low elo)

This needs to be fixed because is impossible to advance in ranked. Mainly for bronze, silver and gold were the difference in play style is so huge. How can you win a game if you get 2 bronze in your team at 0/6 at 6 mins in the game? Bronze should play with bronze, silver with silver and gold with gold. I would rather wait 5 mins to play a game than waste 20/30 mins in one that I already know is unwinnable.