This gamemode doesn't require any sort of skill, it's entirely based on luck.
You got lucky with champions or items? Congrats, you won.
You got unlucky? Well sht, you lost.
TFT players - Stop acting like there's a skill difference between Iron and Platinum, it's all based on how lucky you were.
Also, Riot: Stop wasting resources on this garbage RNG gamemode, start balancing your main game. So far you're doing a really trash work.