A new e-sports in LoL

So I am after 20 ranked games, over the period of few days. And I encountered a new e-sports within the community. I am not sure what's it's called, or if it's been reported already, but I do hope it's a short lived activity amongst the players. What I am talking about, you ask? Well it's simple. Out of 20 games, I won 8. But I was happy with 3, as those were the only ones that did not have an uneven matchup. But the e-sports I am talking about referes to something a bit diferent. Out of those 12 lost, in 11 I was observing my team go 1 by 1 into a 4 or 5 man group and die. I understand it might work in some cases, but dear god, not when they are full off cooldowns and with five hard cc to lock you. So I stand there, at my tower, killing minion waves to save the poor building, and I observe me teammates rushing at the enemy team, allowing them to take two towers and an inhibitor as I was unable to defend alone against 5.

So here is the thing, did I miss something, or is it a new meta to win the games? Or perhaps there are some bonuses if you score over 12 deaths in a ranked game?

But seriously now, I am terrified by the ammount of toxicness, egoism and utter lack of even the tiniest bits of cooperation in the new League of Legends. I say new, because the game and matchmaking changed so much it's no longer the same game. I try to enjoy it, as the gameplay, champions, lore and stuff bring me a lot of joy. But how can you call it Ranked, when I queue solo and am matched against a 4 man premade team? I understand you wish to promote friendliness amongst the players, but it's not the way to do it. As of now, the solo players are crippled, as they will never be able to match the level of cooperation of those premade teams, and as such it should not be called ranked, as you are not evenly matched. I am afraid that I will leave the game due to the bad direction of changes that are happening, and it will be a sad day to me, but I no longer find enjoyment in being abued, flamed, mocked and whatever else the community is throwing at me. I am tired of explaining to players, I cannot save them if they are cought in a snare, or when they catch that Nidalee spear. I cannot ult as Shen every 5 seconds to save each failing lane from certain death. I am sorry for that, but rules are rules. So please community, accept that most of the time you died in the game, was because you made a mistake, not because someone left you. And no, you cannot go kill them all, even if they are all below 30% if they have a lot of skills to lock you out of your dmg. It's sad that out of 20 games, only 3 times did I encounter mostly normal players.

I hope it might change, but my mind tells me it's a stupid thing to dream of.