You focus too much on winrate and metas, try something non-meta , since if you want to you can focus on the 44% loss rate of Yasuo, and capitalize on it, there are many champions that are not used, or under used, they tend to get left behind, and not touched, until they get publicized as a 'sleeper' in some youtube video...
Lets bring up Yorick for example has never been touched until now, never on free rotation, so has not really been exposed to the player base. Those who actually tried Yorick and figured him out and played him well were few and far between to begin with, however the majority that actually tried him, have had him shelved for years, if they even still play. I know one such player that plays Yorick masterfully, and during that one special game mode where we picked our enemies team, we got a Yorick for him, and he carried. Its all a matter of going outside your comfort zone and expanding your horizons, ever try ARAM?