To forgive is to put aside any negative feeling and desire for punishment by definition, but who is forgiveness for? Is it for self or for the one who is sorry?
Most people would hurriedly say it is for self without understanding. To let go of the desire to punish that person makes it clear that the one who is forgiven gains from being forgiven. The satisfaction that they will receive from knowing that they don’t have to watch out for your next move may bring peace to them but I agree, forgiveness is for self.