Ranked Que, Is it possible ?

I'm a solo player in League, and this presents an issue that I'm beginning to analyse. That issue is if it is possible to advance in ranked games purely as a solo player. After each game as a method to improve I look at all aspects of mine and fellow players game play. The disturbing trend is I'm being stymied not by my own lack of skill but the players I'm matched with. Believe me when I say I look first at what I could have done to win before I scrutinize my fellow players. The myriad of reasons usually boils down to four factors.

1. Feeding, not intentional but players that don't seem to get the notion that they can play passive or turtle up on tower as an option.
2. Complaining, after even the most incidental faux pas by another player, some player goes nuclear meltdown and continues until team genocide.
3. Lack of Awareness, or clue of what transpires one bush over let alone what may be happening in other lanes.
4. Leavers, need I say more Now I'm not that great of a player mind you and I'm not saying I should be Diamond or even Platinum in rank, but feel I could easily play higher if not for the unfortunate trend of being matched with morons or crack heads or the equivalent during ranked play. So is it possible to move up the ranks purely as a solo player ?