What do you think about this now. I accidently lost my dad's side of the family's Netflix account.
Oh no, I wish you were joking.  So you lost your dad's side of the family Netflix?
I need to apologize to them, I feel really sorry for this.
It is good to make amends for accidents. You should be more careful next time to not lose the family account.
My dad says I need to explain my actions to the people I wronged.
He makes a good point, you should explain your actions to the people that you have wrong. This could lessen the blow to them and honesty goes a long way.