“We have sinned and have dealt perversely, and have done wickedly and have rebelled, even turning aside from your precepts and from your judgments.”
Daniel here identifies himself with his people. Note the multiplying of words to express sinfulness; wandered from the right way, behaved unrighteously, falling short of God's requirements, doing wickedly by following that which was positively known to be wrong, acting in rebellion against God, and a deliberate turning aside from His Law as revealed in the Scriptures. Yet he no doubt felt its truth about himself deeply. None are more conscious of sin than the truly righteous.