No commendations.

[Sakei]

Commendations are a weird thing. Sometimes you play amazingly, literally carrying/saving the entire party, and nothing.

Other times you do the bare minimum or die stupidly and get multiple.

You cannot predict the whims of commendation-giving.

I think you've said all there is to say. It just comes down to the whims of the other players. I've gotten multiple comms on times that I know I screwed up. I've also gotten no comms on times when I saved the group multiple times. I try not to think about it much. To the OP, I'd say to just ignore that run and just continue to do your best.