Don't take charge of the team, regulars or more experienced players don't like noobs doing that. but at the same time, Don't just take their word as gospel. If you think you have a better idea than their idea, say so.everyone gets along well if everyone pitches in.
also, It is not about staying alive or gainging the most kills. It is abuot teamwork to gain an objective. If the task requires it, take one for the team.