YOU SAID:

I want to win at this game so let me win

INTO JAPANESE

この試合で勝ちたいので、勝たせて

BACK INTO ENGLISH

I want to win this match, so let me win.

INTO JAPANESE

この試合に勝ちたいので、勝たせてください。

BACK INTO ENGLISH

I want to win this match, so let me win.