You are in prison currently until you reach level 30 and start playing normally, it should be better. Where do you think all the people who are banned go? they make new accounts and level them.
Also no matter how good you get, you should always do /mute all , chat isn't required for you to play the game, it actually often makes you lose when you type and not focus on what you should do to win. Pings are perfectly fine for all the communication you need, if someone is spam pinging you "?" you mute his pings as well.
You will feel so much better if you do /mute all when each game starts because they'll just end up wasting time typing while you won't get annoyed or tilted by them and most importantly you'll try your best to win. Spending 2 minutes in game typing, can just cause you to lose the game easily.
I always mute everyone and i am nowhere near a new player, it is such a better experience, no matter how good you play even if you are winning your lane you can still get flamed by players who are tilted or they want you to listen to their calls and you didn't think their call was good.