The Climb is a MYTH
There is no climb, you will be forever stuck where you are.
Take it from me, I been silver for 6-7 seasons. I know I gotten better, I make far better decisions, I started being consistent with my roles instead of being all over the place. But it means nothing because this is a team game and you have to rely on other people to not be terrible.
Do I have an off game? Sure, everyone does. But if your support keeps face walking into bushes to get smashed, even after telling them to stop, that's something as an ADC I CAN'T FIX, because it's not me. I can't fix someone else's stupidity and guess what, neither can you.
People AFK'ing, people leaving and ragequitting games, these will cause you to have to win another game just to get back where you started.
What do you need to secure a place in gold or higher? An actual team of people to play with regularly that will take actual constructive criticism and use it to better themselves.
Lol you doing solo Q? Enjoy going nowhere, buddy.
Take it from this 2009 veteran, I know how this works, and after so long I know where I'll end up unless I get a team.