Going Up Elo

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Improve your mechanics bronze- silver Improve map awareness and mechanics silver-gold

Improve your attitude and mechanics gold - diamond

Main a champion does help and understanding your role as well

Improving map awareness , mechanics and warding

to start, i went through your match history. if you enjoy support, it's fine, but you'll get out of bronze more slowly playing support at a silver level than you would playing a carry role at a silver level, because you can't rely on people in the carry roles to perform in bronze.

my suggestion is to train a single champion who is pretty strong and isn't difficult to play mechanically repeatedly in normal draft mode. only way to ensure you climb is if you really are better than your current tier. when you get comfortable in normals and you find you consistently achieve high kda, you're probably ready to rank. you still have time to train before season end. Cait is a good adc choice. Shyvana is a good jungle pick. Renekton top. etc. You only need to work on 1. 2 if you want a backup.

feel free to add me if you have specific questions or want me to observe small segments of your play. i don't mind giving pointers.