The honest reason why people lose games...
Nuking the enemy champion levels 1-5 and snowballing has become so vital to win the game, everyone's forgotten you can just farm a lane and not force a bad fight.
The games that I don't lose by the 20minute mark, but still do lose, look something like this
My team starts 1/10, my team procedes to "Farm it out" Team starts getting ahead, and is now 5/11 Fuck yea, we can win the fights. Team is now 6/14
"What happened"
Ummm yea thats because you forgot there is this thing called gold, that you need.
If everyone could just stop forcing bad fights and farm this game would be soooo much easier.