Best way to climb up elo without tilting?

Don't play after 3 loses in a row. Take a break. In platinum they still don't know about macro and mechanic level is close-to-gold/silver.
BEST TIP: Why tilt? They lose too. And with the new ranked system if they don't try they won't climb near platinum xD.

Find yourself a duo and go like mid jungle pre or something.

Mute all, and play all except botlane, u wont climb there

created an account in 2014 but started playing the game in January of 2015. Been playing the game for 3 years now. I feel like the game is getting worse with each season with all the stupid champion and item changes though I do like the new champions and reworks.

You can't. This game is tilting, its full of toxic players, crap ton of RNG and luck based and the only way to play it is to accept it and embrace it. Just control yourself, listen to music or play with a friend who is calm.

Mute all your teammates.
Play with premade.
Main a champion, master him.

play with your friend and enjoy it is the best way

THIS-------------> Mute All and listen to some music, works like a charm.

1. Mute all
2. Mute yourself (xD)
3. Farm farm farm farm
4. see your map allways as you can
5. don't be greedy
6. try to help your team allways (tp, roam, early ganks on late champs....)

Play for fun, play stoned, drunk or play with your friends and have a good time and don't take the game too seriously