Jon’s sisters Sansa and Arya (Maisie Williams) won the battles against Ramsay Bolton (Iwan Rheon) and the Night King (Vladimir Furdik), through hard-earned alliances and assassination skills, respectively. He survived them both, sure, but on both occasions, he deviated from the carefully laid plans and nearly died as a result.
In the end, Jon wasn’t much use in either of those specific conflicts.