But,
Whenever I catch myself reaching for “but” I recognize it is because I need to feel heard. What I did was unacceptable. But I didn’t do it in a vacuum and I need my grievances to be recognized. My belief is that omitting the “but” phrase is an act of faith. You need to trust that the other party cares about your feelings and side of the issue, too. Accepting an apology is just as delicate an act as giving one.
“I’m sorry I hit you with the blue shell.”
“I appreciate you saying that. I know you were in last place and that must have felt awful. I don’t want that for you either.”