If I’m DPS I usually comm the other DPS as long as they do the bare minimum.

If I’m Healing or Tanking I give it to Heal/Tank depending on the content, like when I have a co-healer/tank or not. And same rules do the bare minimum comm for you.

And sometimes the comm just goes to the talkative funny person in the party cuz they made the run fun. Helpful people sometimes get the comm too.

Also I usually main RDM, so pretty use to not getting comms when I think I should get at least one for scraping healers and party off the ground more than once lol. It is what it is at this point.