The game was lost by you. The site determined that the game was abandoned by you. But from your perspective: your opponent left, yet your clock continued to run down.
What I suspect may have happened was the site "perceived" that you disconnected and assigned a win to your opponent after two minutes passed. If so, that was clearly a rare and unusual glitch (on the site's part or your PC's part), unlikely to happen again.
sftac
i played another player a moment ago in live chess who belong to what i call poor loser and a cheat. when they are in a disadvantageous position, instead of resigning or go on playing with the game until its end, they disconnect. But instead of their clock ticking, it's your clock. In the end, you lose but it was them who disconnected.