Ohh, I understand the feeling of being able to clutch heal and save the game. I did it just the other day in OW with me being the only healer and alternating healing different teammates trying to let no one die. That game was very intense when it went into overtime and we were like 1% away from winning. We could have won or lost, and everything was chaotic. I was jumping around the payload trying to stay alive as I knew that the moment I died would be the moment we lost. We won in the end, and both my teammate and the enemy said that I was the best healer, which was something nice to say, as healers often go unappreciated. I still bask in the afterglow of that match even though some days have passed.
I healed around 21,000 HP in that game by the way. It was in Quick Play so that number is a lot. The average is maybe half of that.
I wish I could just kill off some teammates like in this chapter though. Some people deserve that.