I've noticed a trend in my games

The team whose jungler ganks... wins! The team whose jungle afk clears... loses! It's a simple matter really, but it took over 20 games for me to see. Just look at my match history (seriously). Obviously, you can't see what happened during the games but for the most part, the scores say it all. My KD gets worse whenever their jungler ganks while mine twiddles their thumbs.

I'm not saying I played perfectly because I didn't. I made mistakes but even with those, I still think the biggest factor that scales the game is the jungle. The rampant jungler difference got so bad, I even specifically said in champion select AND in game to my jungler: Please gank. I don't care if it's not my lane so long as whoever you are ganking gets strong enough to carry. And what do they do? No ganks in any lane for the most part, but there were rare cases in which they did gank... losing lanes.

I don't know if the cause is just me getting unlucky, but I've been going on massive win-streaks followed by equally massive losing streaks because League has become a game of chance. If my team happens to score the jungler who cares enough to gank, we already have won 50% of the game because chances are, the enemy's jungler is the exact opposite.