Change the feeling of losing

Everygame you're on the losing team all 4 of your teamates are hardcore inting and you have no chance of winning. You try to surrender @ 15 minutes when the match is 2-26 but 1 person says no. You're 2-0 and you just want to go next. By 22 minutes when the enemies manage to end the game it's 6-38 and you're 6-0. This situation happens to you for 50 games straight, not where everyone of your teamates play this badly but at least 3 of your teamates are playing this poorly.

Something should be done about these matches.

I myself don't enjoy stomping my opponents 36-2 in an extremely one-sided match that the opponents have no chance of winning, nor do I enjoy losing because of these matches.

Snowball mechanics are waaay too decisive of game outcomes. You're vs nasus top and you got ganked by the enemy jungler level 2 and lost 60% hp? Whelp gg the nasus just free farms and wins the game. Riven/nasus/trynd/fiora/"insert any toplaner here" will easily kill or gain a significant lead because of this level 2 gank. The enemy jungler isn't put behind at all because the jungle is practically a support lane now, therefor you have no impact and if you recall you lose a massive experience lead. This is also extremely devestating because teleport was nerfed into oblivion. Ignite was buffed and buffed and buffed and buffed and now the same summoner spell that used to have a 270 second cooldown now has a 180 second cooldown, whilst having pretty much the same damage as it used to have when it was on a 270 second cooldown. You can ignite your opponent simply for poke damage because the cooldown is so low it'll be back up in a few minutes.

Got a lead vs an auto attack based champion? Negate 50% of their damage with ninja tabi's. 20 armor + a -12% of all their basic attacks damage (hint this is all the damage of many champions in the game). Enemy has long and strong cc? Legend tenacity completely negates that especially with merc treads.

At this point knock ups are the strongest form of CC as there is no counterplay to knock ups. Hence why Aatrox, riven, pyke (his q counts) etc morgana q? Rammus taunt? Qss it or use your 52% tenacity and it's fine.

Point is: Make losing a match still fun and feel like you can still win. At this point it feels impossible to win if you fall behind