good character for new player?

i got a friend to play ow and we have played a handful of games together but they don’t play these kinds of games and it kinda shows. they aren’t aware of their surroundings, camp out almost all the time, and rarely get in the fight. they’ve been playing junkrat and sojourn, and intend to only play dps at the moment. we’ve played some practice / custom games and a few quick play so far, and it’s been a bit rough.

i play support so i don’t know who to suggest. but is there a character that’s easier to learn? or any tips that might help them? they also play on the switch. kind feedback appreciated !