Hey there, I am a new player too. I also agree that they should do something about their matchmaking it is pretty awful. On the upside when you win a match under those odds, it is a good feeling. Howerver, it is very rare.
I have worked my way up to playing (blind solo) where most, if not all, players are level 30. But since I'm new to the game, about a month I would say, I am being put on teams with very experienced players. This makes me the weakest link, and ripe for the verbal abuse.
I would like to see a 'low elo', not sure if I used that correctly, ranking system in place from the start. I would love to hop into ranked, but I only have a few champions and the banning system could effectively knock me out of play. With a ranking system in place from the start it would give new players a chance to learn the ropes, so to speak.
It would also, give new players an idea of when it is a good time to check out the draft and ranked style of gameplay. Additionally, it would keep some of the fodder out of those game modes as it would be gated by the ranking system. Adding a 'MMR', or whatever the ranking resource they chose, penalty for player reports (ie: afk, unsportsman like conduct, etc.) would keep the toxic/trolls out of the more competitive and serious style of the now ranked games.
This doesn't solve your problem though, because there are some pretty bad level 30's out there, myself included, and a ranking system may have them playing against you if your a better player.
But allways remember, never give up never surrender.
Glhf