Many are not as admirable nor innocent as they may wholeheartedly believe.
Expanding walls, forcing fingers into festering wounds of one’s history, it brings light to a withered sight.
To trust a bias opinion of oneself merely closes the door to Truth.
Open those eyes and see.
Additionally, understanding how another feels when closing themselves is less important than the act of learning more about oneself.
Meditate on the past, and it may change both your understanding of self; and allow you to both meaningfully apologize while accepting it may never be heard.