Issue with Scrapper Triumph

Hi there PVE player here,

I’m on the quest to accomplish most of the triumphs in Monument of Triumph. Even PVP, which I never touch with a 10 ft pole. Not because it’s bad, but because I know I’m bad at PVP games.

The Scrapper triumph says you have to complete 3 3v3 matches in rotator Crucible.

Ive lost all the Shutdown matches I’ve done today. Do I have to win in order to make progress?