What the other user is saying is that you owe yourself forgiveness. Not for anyone else's benefit. Not for their benefit nor for the benefit of your past abusers. For your benefit.
Maybe someday you'll see through this cloud of pain and understand what that person is trying to tell you, instead of hearing echos of your wounds and seeing phantoms of the people who hurt you in the past.
I hope you see the sunshine again, and the open skies.