How am I supposed to get out of Bronze if I only play bad people and never learn from my mistakes?

Coming into any video game I always learned immediately what I was doing wrong because I would get my ass kicked from other players and would learn my lesson right there. It's so hard to improve at a game when you are only playing people that suck (and yes I know I suck and that's why it's where I am). The thing is I really like league for what it is and want to improve I just don't know how to if I never get severely punished for doing something wrong. I will simply never learn or take anything from it. Sure you can watch pro games or high elo streamers but that only does so much as everyone plays the game differently so in order to learn effectively I would have to play someone that high of an elo so I can really look at how poorly I'm doing. I feel like games where I do play well with a good k/d and getting a win, I am still playing atrociously because the enemy team has no idea what they are doing either. I would love if Riot added a mode where it was a completely random match-up between all the players(meaning they take mmr out of the equation completely) as I feel like it would help newer and less skilled players learn . But that's just my opinion, any thoughts on this?