Just on the flip side of forgiving others is asking for forgiveness.
And this is how you heal our world - ask for forgiveness. Admit that your words and actions may have caused others pain. And then ask them to forgive you. This applies to both your conscious and unconscious actions or words. Even actions or words not spoken can cause hurt. And you can heal that. You do that by saying, “I am sorry for my words and actions that hurt you. I am really sorry that I hurt you. Please forgive me.”
This is the trigger for peace in the other. They may or may not understand it. They may or may not be prepared to forgive. But now, they have been offered a chance to heal something they might not be able to do easily without your help. So, make that effort. Take that step. Help heal the hurt you may have caused someone consciously or unconsciously. Ask for forgiveness.