if i might suggest something that helps me, i main support, and win or lose stats such as damage, or kills dont always mean vry much to me, so what i do is i look at what i want to improve about my own game....
how many wards am i putting out, is vision being granted and denied where it is most effective, is my pink ward out
did my death mean something?
did i remember to use my items, my spells, my pots....
did i build according to what the game needed, not what i wanted
was i positive and sportsmanlike in victory and defeat
did i have mana problems or was i resource aware
dragons? baron? did i miss them and if so why, vision?
so on like that, make the game about more than just the win or loss at the end.... its a fun game, with many minigames within, all you have to do is unlock them with your own choices