Eh, they look like a very visible part of the problem - but there are a lot of weird bits to that match.
Like the 6/18 Khazix is feeding harder than either of them, and having a Jungler feed is worse than pretty much any other position - because a way behind Jungler means every lane gets shitty ganks / if not distributed feeding (free Kha kills whenever he shows up and fails to gank). He also has IE on Khazix which is a not-great rush choice, then he built another IE - because he wanted to compound not-great with terrible.
Your next best player on your team is a Teemo with hurricane who appeared to just farm top most of the game (fairly high CS despite enemy top controlling lane means he probably ~never left top). Your enemy team doesn't have much melee either, which would be the only remotely okay reason to go Nashors+Hurricane Teemo: if you were fighting a 3-4 melee team. But that's Singed/Evelynn - both of which hardly count - because Singed DGAF, and Evelynn is invisible until she's inside you from behind (particularly as Teemo).
So you snowballed as Fizz and got kills (hard to judge) - but really everyone else on your team made big mistakes even just from seeing that scoreboard. Plus, game ended when you had just finished your full-buy - along with the enemy bot lane - but if it had gone on any less or any longer - the gold differential between you+ashe+lux would be less, and presumably all three of your scores would equalize with the rest of your teams as the relative advantage of the snowballs start to slide.
Not saying I don't sympathize - because as a Jungle main, and someone who has almost never raged in any video game in 25 years of gaming - when someone insists on being jungle, then is positively horrid - my blood pressure definitely rises. First-time Junglers who just bought Kindred lately.... lost a promo series to that twice in a row on Saturday, to two different "guys I just bought Kindred, never jungled before, but I'm early pick so I'm doing this". Good times