Bronze to Platinum

Farm, farm, farm.

Also watch pro players on youtube, and keep asking yourself "why is this person doing this".

in my opinion best champion to get from bronze is yorick not hard mechanics and you can solo carry

just learn how to farm correctly and try to play passive if u cant snowball on your enemy or he is just too good for you. i get to the diamond playing so passive all the time with nice winstreak so i think it works