Smurfs and Jerks In League of Legends

I am having a terrible time playing this game, I only started it because its the only game my friends play anymore. I created an account and played a few bot games, then I start with PvP. The community is so terrible that I am sure 4 people on my team and at least 3 on the opposing team were "Smurfs" (a term I learned from my friend who plays lvl 30) They tell me to uninstall or to quit, complain that I am loosing the game for them, and the other team is thanking me to making the game easy. I thought the whole point of the level system is to make it so my level 4 account only plays with other level 4 accounts. Why is it am I being matched with players who are way higher level than me. It is terrible to play this game, I can't learn anything because I am being bullied. Even in bots i've been told to uninstall or quit or my team tells the others to report me. "Jinx insta report" "lol noob jinx, report" How am I supposed to learn or play this game when all the players are like this? Your system needs to be fixed, its unfair and has been stressing me out to the point of never wanting to play this game.