How do you make yourself an appealing card mate?

Casual tags or going out with friends, how do you make yourself a pleasant card mate that people will want to play with again?

BTW. I’m not seeking advice. I’m just curious to hear about how others think on the issue and some of your horror stories. I’m sure you have plenty. And I know I’m a pretty good card mate. Maybe a bit too much “dad” but whatever. I’m mostly a wall-flower and allow others to be whatever it is they are.