Matchmaking so annoying and unfun

I know it is preseason or whatever but when I get an Iron player on my team and I am silver, why is the entire enemy team gold 4 or above with one plat 4? The iron player has only three games in ranked and had already lost one. Obviously we lost.

My team: Silver 1: (me) Iron: 2 win 1 loss Gold 4: Gold 4: Gold 3:

Enemy team: Plat 4: Gold 3: Gold 4: Gold 4: Gold 4: