Why is matchmaking so bad???!?

Why was my top lane, and my jungle, both just. . just horrible!

Top went 0/6/0!

Jungle just, dove into any combat, no matter how totally illogical it was.

Why were both those roles so bad on my team? It's not like Ezreal built right, either, for what he was doing. .

Why were they on my team???

Shouldn't our jungler have been on the enemy team, to balance it out? Like they were both really bad!!

Shouldn't it be "4 reasonable players on either side with one bad player?" Why are both really bad players, on my team; and also ezreal wasn't that good, either. . . .I mean, obviously two players on my team were really, really bad!!! One of them shoulda been on the other team! And even if you can accept that matchmaking fart, then why was ezreal also so mediocre!! He didn't build right for what how he was playing!!!

I've played 5000 games! Should matchmaking be able to place competent players? Or equally bad players on either side? Or at least not "one side is grossly inferior!" I mean, yah, my support was on point. . . .