Kills and assists aren't everything
You can have 200 kills, and 500 assists, but if you died 400 times, its not gonna matter. I just had a game where i was 9-2-6. i died the least in the entire game. i had 300+ cs, most in the game. i backdoored 3 inhibs. When I get an S rank, my naut teammate claims i dont deserve it, because i wasnt in fights. Guess what. kills dont win games. if i take 4 towers alone, 3 inhibs, and make the enemy team unable to push, im adding to the team. I can get kills. i ws 0-2, then i got to 9-2. i was able to 1v1 any of them. and they knew it. thats why when i solo push a lane, they send 2-3 people to me. Pulling the enemy out of your way is adding to the team. I didnt have a lot of kills, but i added a lot. TLDR kills dont win game, nexus does