If you are not ready for Ranked, DONT Play it. Play Norms and learn. IT is Fun to Learn.
I stop playing Ranked. A friend says "play with me, guaranteed win with you". Friend kissing ass so i can play, so i gave into it (i know im good, but not that good).
Back to back games with people clearly not ready.
Cait and Soraka that don't know their champs well enough (also weren't good at decision making, positioning, lane pushing, etc)
And there was an Ahri, who didnt get keystone masteries and didnt know about them? (and would flame others, when player was clearly a weak link XD)
Please play Normals. Learn. Play the Free-to-Play champs in normal. Learn as mcuh as you can. Trust me.
Yes, i'm Bronze now, and was unable to get out of Silver in S5, but i am actually consistent enough to make other newbs in my elo look awful.
So why do i lose? People are not ready on my team. Enemy gets super lucky, not much else.
Low elo is more about luck than skill. So let us try to make it skill based by learning in normals.
Find out a good OP champ for you. Spam them.
Also, learn to use the other OPs to some extent so that when a foe chooses them, you know how to fight them.
Dont play ARAM, in Summoner's Rift. ARAM has its own map! (ARAM in Howling Abyss is great way to learn to teamfight). Summoner's Rift doesn't have one lane, it has three, and a jungle.
Learn from your mistakes. That is how i got good. I look at what i did wrong. Now in low elo, from all the players that are not ready for Ranked, i can't learn anymore because other players are not willing to learn, and they make the mistakes.
But Normals when queuing with Plats and Golds, i see just how much i suck compared to them. And i learn. Any little mistake is dully noted and i attempt to improve upon what i noticed. I make several mistakes. I miss skillshots, or cant cs as well.
Yet i play Ranked, and i notice just how much people are not ready for Ranked.
So please, do what i did. Find someone better than you, and go in and tryhard. Learn your champ. Learn your foe's champ. Learn items. Learn to counter foe's items. Learn from every little mistake.