I'm getting sick of these games that are determined by how just one lane goes

All the other lanes could be doing fine, even being a little ahead in farm and kills, but because just one lane is 0/3 inside ten minutes, the game's already over because thanks to Rift Herald + Turret Plates (remind me again why this even exists?) + the Demolish rune + just absurd damage in general, that lane's already lost the outer and inner turrets by 15 minutes.

For me, this seems to be happening to top lane the most, because that's where the Rift Herald spawns, so it's really easy to snowball even more until the game is over. And you're STILL going out here and buffing champions like Riven and Fiora which already snowball hard enough but you need them to be strong for Worlds or whatever because the rest of your playerbase doesn't matter to you anymore.

It's just becoming so easy to snowball now. I think you need to remove turret plating, honestly why are they even a thing they just made it even more impossible to come back when behind. Also you need to remove keystones, and I'm not even taking the piss. The game started going downhill in season 6, and that just so happens to be when keystones were introduced. Work that one out. They just give us an unnecessary amount of damage and make sure teamfights end within 5 seconds of starting. What happened to the slow-paced League of Legends we all used to love? Arcane comet. Summon Aery. Electrocute. Dark Harvest. Conqueror. Why do we need them? The game was doing just fine in season 5 where damage was perfectly balanced and then you decide to get rid of all of that and give us a ridiculous amount of one shots. Yeah I know I'm going off-topic but I wanted to talk about keystones too because they've ruined this game and I don't think a lot of people realise that.