Sometimes the word sorry is not enough
Some apologies sound technically correct and still leave the other person in pain because they do not show understanding of what actually hurt.
A strong apology contains both ownership and repair
The most effective apologies clearly name the action, acknowledge the emotional impact, and show what will change so the same pattern does not repeat.
Also notice what helps the other person receive repair
Some people need time, some need a longer conversation, and some need to watch consistent action before trust begins to rebuild.