[2020] I have got a few DRG multiplayer etiquette questions for the veterans out there!

So what kind of things do you want to see from teammates? I just picked up the game yesterday and still have been nervous about about hopping on MP because im not sure im good enough (i hate noobing it up and upsetting people.

What is mandatory from your teammates each game?

What behaviours do i avoid to have a good game and make someone experience fun instead of frustration?

What specifically do you expect from each class?

I have only played gunner so far and want to be efficient. An example is "gunner should drop bubble shield when ______ happens"

Thanks for replies in advance! Just hate the learning stages of mp when you can visibly tell your playing the game all wrong