Most Catholics don’t know their faith. Resulting in many misunderstandings of Catholicism. The remainder of the misunderstandings come from the expectation that the Catholic Church is full of saints, when in reality, it is full of sinners.
God has blessed The Church abundantly with the clear teaching of the Church in her Bible, in the Catechism of the Catholic Church, in the documents of The Church councils, and in the papal encyclicals.
If we don’t take the time to know the teachings our faith (that is, how to live in freedom) we have no excuse for misunderstanding God will (Catechism, 1791) and are destine to live as slaves of sin.