The bible says “Blessed are those whose transgressions are forgiven,
whose sins are covered. Blessed is the one whose sin the Lord will never count against them.” (Romans 4:7-8, NIV)
God is the only one who guarantees that your sins are not counted against you.
If you ask a human being for forgiveness, they have the power to reject it. Although God also have the power not to forgive He will not be able to because He is a God of covenant. Once He promises, He will always deliver. Since the death and resurrection of Jesus be rest assured that God will give you a clean start if you can repent with a contrite spirit.
There are many people out there who have made genuine mistakes and are bitter. They want people to forgive them but fear that if they don’t get forgiveness then they cannot lead a happy life. But let me tell you to take courage in knowing that God loves you so much that He sent His only son to die for that very purpose. So that you can be saved.