silver 5

Will you allow me to diagnose what you're doing wrong? I assume the only reason you're posting on here is because 70% of the last 20 ranked games you played were losses.

The very first thing I did for myself to improve was set a death limit of 3. If I go over 3 deaths I was playing poorly, it didn't matter why to me. It didn't matter if I got ganked, camped, etc.

Second, pick a single champion and 1 backup and make them your go to champs in ranked. Climbing through bronze and silver is a lot easier when you play champs you've mastered and are comfortable on.

Those are just my 2 cents.