...that servants of sin are free from righteousness. True, but his bondage to sin only leads him deeper into slavery so that it becomes harder and harder to do what is right. The Prodigal Son is an example of this.
When he was at home, he decided he wanted his freedom, so he left home to find himself and enjoy himself. But his rebellion only led him deeper into slavery. He was the slave of wrong desires, then the slave of wrong deeds; and finally he became a literal slave when he took care of the pigs.
He wanted to find himself, but he lost himself. What he thought was freedom turned out to be the worst kind of slavery. It was only when he returned home and yielded to his father that he found true freedom.
Romans 6:16 Know ye not that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?
Whatever you yield to becomes your master. Before you were saved, you were the slave of sin. Now that you belong to Christ, you are freed from that old slavery and made the servant of Christ.