As a child, do you forgive your parents for what they did and did not do? As a parent, do you forgive your child for what they did and did not do?

I’m tired of complaining,fighting and loosing things which once held a high value in my life.Slowly and slowly I am learning to detach myself and see from outside what is attachment ?What is forgiveness?Do we forgive because we truly believe in giving second chances or do we forgive because we want to keep ourselves happy ?
I’m doing it all ,forgiving ,forgetting ,detaching all ..just to keep myself happy .

Not for anyone but for myself.
and I think this is how it works.Love only yourself .