I think this definition of an apology is too far from common usage to be reasonably expected to be understood, and too broad to be useful in general.

If you want to refine your definition so that it’s more than just an “explanation” (already have a word for that) I could maybe get on board.

And, to be honest, I’m a little bit worried about how one comes to equate an explanation with an apology. My gut tells me this definition creep might be a red flag of a victim of an abusive narcissist.