When is the last time you apologized? What did you say or do? Did the person to whom you apologized seem to accept your apology? Did they forgive you? Was the relationship healed? If not, I have an idea as to why they found it hard to forgive you. They did not hear your apology as being sincere.
When someone hurts us and is now trying to apologize, the question in our minds is: are they sincere? We judge sincerity by how they apologize. If they simply say, “I’m sorry,” that may seem a bit weak. We may want to hear them say, “I was wrong. Will you please forgive me?” There are five ways to apologize. If you speak only one, you will likely come across as insincere.