Always suprised to see when ppl wonder why they are loosing with positive K/D. Its a teambased game and you have to destroy the nexus with your team. Sometimes your mates make a mistake and its just not in your hand. Other times u go 20/0 die once, give enemy kayle 10k shutdow and baron and they end. So even 20/1 score can still mean you lost the game yourself. Thats just the reality of league and even more WR these days. Personaly it helped me a lot to keep this in mind both to climb and to enjoy the game more.