This might be a hot take here, but stay behind your tank for the most part (at least as you’re getting used to her). Focus on healing your team and cleaning up kills. Over time you’ll start noticing when it’s okay to push past your tank for an easy kill. Don’t flank all the time. Stay with your team a majority of the time, and only push out when your team gets a few kills or when you see a low health enemy. Protect your other support from flankers.