I keep performing, but it doesnt seem to matter.

I'm just curious as to why, even when i perform and do my role, I keep loosing.

I win lane i help in team fights i keep my K/D positive as in like 17/6/14 in this last game

I am also curious as to why there isn't a loss prevention as i have heard about.

for example i had an afk/dc whatever

so it was 4/5 for 2/3 the match.

my top performed and my adc did ok, despite his support afk

jungle fed and made poor choices.

I am just curious as to how i am supposed to move up if this happens?

Isn't ranked supposed to rank individual skill? i also understand team play is involved but that's what assist are there for.

Note: i wasn't sure where to post this, game play seemed the most appropriate

I am currently 10/6 in ranked, i placed 6/4.