No, you don't "ONLY lose when someone goes 3/17 ON PURPOSE". Your match history shows a pretty normal ~50% win rate and far from every game has a 3/17 in it. Most games look like, you know, lost games. Your mid kata gets pwned by their Fizz, bot lane ganks mid for some easy kills at 13 mins and then it steamrolls from there. A lost lane, possibly bad decisions but not "3/17 ON PURPOSE".
Where do you want to draw the line? At the 1/9 Ashe or 1/11 Orianna?
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1933756021/217790387?tab=overview