https://youtu.be/YuvApF1OW60?si=9l9JGT6H_eQnoBfc Just as the prayer that God taught us in the bible that goes this way, forgive us our sin just as we forgive those who trespass against us. You have to learn how to forgive if not our heavenly father will not forgive us. Forgiveness is not a thing you do to some people and not to some people, it's God's instruction to us.
The bible made it clear here that if we forgive, our heavenly father will also forgive us. We have to cultivate the spirit of forgiveness in us and not allow anger dwell in us for a long time, that alone can lead to unforgiveness. And learn to over look somethings. Forgiveness is not something we do because we feel like doing it but, it's something we must have to do.