Ranking TFT (fix plz?)

Sup first of all excuse me for using wrong sentence, English is not my main language…
I was thinking about getting premium but… 2much akward thing in ranking…

If iam searching for NA(Canada) Master/Win
I can find myself at #75

But if I’m looking for Master/%win NA(Canada)
Can’t find myself in the ranking… 25%win + I’m supposed to see my name around Top1 because the other guy is like 20-21%win I think … so what the hell? This is sure I’m not gonna buy premium if I doesn’t know what is going on here ! Thx you peace !