I'm afraid the play solo Queue
The reason? The TLDR? Mainly because thanks to the new punishment systems you can't tell somebody what they are doing wrong or if they are doing something wrong, unless you want to get reported and barraged with comments against you in all chat saying you're a troll/rager ect.
The non TLDR:
First off, don't get me wrong I LOVE the fact that riot is taking aim and trying to fix toxicity in this game, as well as afks, trolls, ect.
However, the problem with they new system is riot is letting the community decide what's considered "toxic"; to a degree this is a good idea.
The problem with riots version of it though is that they are 100% letting the community decide what's toxic, meaning anything can get you reported as long as it offends at least one person in your games.
Now everyone has the common sense of what's truly toxic; homophobic phrases, racial slurs, deaths wishes; but what about the grey lines in between? How can we really know what we might get reported for when there is no clear cut set of rules beyond that?
How can I know if saying "hey bud you shouldn't dive the enemy turret like that" will get me labeled as a toxic player and get me reported. On top of that how do I know saying "fuck me" every time I die, won't label me as toxic? Hell Im afraid to have friendly banter with my team or the enemy because literally ANYTHING I say could be deemed toxic if somebody thinks " I don't like the word potato so I'm going to report him because the word potato triggers my phobia of potatoes and being bullied for identifying as potatokin"
Now you might say, oh just mute everyone turn all chat off and hope for the best. This would be true if there was a clear cut set of rules and I knew I wouldn't be punished for trying to help my team.
However nowadays anything can get you reported and now with the 4 tiered system, literally anyone can go into ranked, do terrible, and nobody can help them unless they want to take the risk of being labeled toxic
Case and point: played a game as lux support the other day with Lucian ADC and top was ryze. Ryze kept getting dove by Jax and was 0/3 5 mins in. Lucian told ryze, "hey ryze you gotta stop dying, if he dives you snare him" which I thought was some solid advice, however ryze flipped his shit, started mocking Lucian then they both started bickering.
Im not saying remove the system in place riot, I'm just pleading that you don't let this community, which right now is known as one of the most bitchiest, toxic, report happy communities, make the rules for you. Have a clear cut set of rules so I don't feel afraid to give somebody advice in game.