In low elo enything works for the simple and pure reason people legit don't play the game, and if you go in some kind of slightly-crapper-than-average elo such as low diamond it just works because people allow you to make it work.
Until diamond 2 you're not actually playing against the enemy team, you're playing against your own lack of skills and your own team, after that, you actually hit the wall of a real opposition from the enemy team, if i could gather 3 players of my same skill level or clone myself 3 times i could win any game up to diamond 4-3 with only 3 players in my team.
This game has a mathematical basis, when you are not there, not in range, with your stuff in cooldown you have basically less numbers than your supposed total, people in low elo simply don't use their numbers so if the adc stops autoing in a teamfight because his mechanics are garbage/he's scared/whatever is happening in his head at the moment he's basically subtracting 20.000 gold to your team until he gets back into action, same works in the early game, a braum top against my renekton would just be a walking purse filled with 300g, same thing when i got filled top and i stomped the enemy camille (the strongest champion in the game right now, with absolutely NO counterplay unless the player is absolutely shit at camille) with maokai that is a champion supposed to be weak in lane.
I hope i clarified your doubts, now go and don't troll, so you will not be a burden on your teammate's backs. :)