My parents are both dead. I'm an orpahan
Oh that's very sad. You can also be an orphan through abandonment. 
Right. It can be hard, but a lot of orphans have great step-parents!
Did you have to live in an orphanage, which is a residental institution?
Yes! I had some friends there, but I think it would have been better to be in a normal family situation.
I guess that some children in a orphanage would have parents who just weren't able to take care of them, as well as deceased parents.