I've never confessed sins to a corporate congregation. I confess them to God privately and most times, as soon as I realize I sinned. Sometimes once or twice a week, sometimes daily!
Scripture says to confess your sins and ask forgiveness because failure is part of the learning process. I haven't a verse that says to go to church and confess to the congregation, or to a priest in private. (The Veil was torn in two!)
I suspect that King David was good at this, and that very reason is why David was called a man after God's own heart.