It's not that I don't understand the horseshit platitudes people spout off about solo queue(you are the only common thread, blah blah blah), it's just that in reality if you are close to your actual skill level and you are only making incremental improvements the random aspects of solo queue have a huge impact on the overall quality of your experience.
I'm not sure that I agree with this. Hear me out, please.
I've found it's almost impossible, if I'm not trolling, to drop below a 35% win rate for any 20 game period. I take that to mean, 35% of my games I cannot lose. My impact on those games is 0.
For example, there was this one game in Bronze 3 where my team had two AFKers. I mean, that game can't be won, right? I just played the game like I always do and tried to win. But my impact was basically zilch. Meanwhile, what I didn't know at the time was my other two team mates were diamond smurfs. Not fake ass "mid or I feed" diamond smurfs. Legit diamond level players.
I sat in my lane and pushed to tower, kept up pressure all game, while my two teammates 2v5'd the enemy team. I was the most useless bitch ever, and if I had afk'd I still would have won. That game was impossible to lose, unless I fed the enemy team intentionally for 40 minutes. And you know what? Even if I had done that, I still have pretty good odds of walking away with a win.
Conversly, 35% of games I really cannot win. Just the nature of the game. If both of these things are true, then my maximum impact on a game is about 30%. Which is close to what you would expect, given that you are 20% of a team in any given game, and you are competing against another player on an opposing team that's worth about 20% of his team, and maybe you can out perform that person and carry your team an additional 10% or so. That 10% or so is what, over time, increases your mmr.
My take away, is that if I'm playing seriously, my contribution will help determine 1 game in 3. That's statistically significant, but only over time. Each individual game really DOES NOT MATTER. As long as you are consistent and working to improve your mmr will continue to go up the more you play.
That's the way I look at it, for whatever that's worth.