How does anyone climb?

I have a 20% win rate or so, legit I have no idea how people climb unless you’re diamond skill level able to carry yourself out? Has it always been this coin flip feeling? Ranked in league is one of the most frustrating experiences in gaming I’ve ever felt. Most games I don’t feel like I even get to play. Not that I’m blaming team cuz I don’t play like diamond either, but every game is incredibly one sided. So 12hrs per day until coin flip is in your favor? Help an iron player out here
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