So? Do you think that God cannot dictate what is written down in His Word? Or is God incompetent to let man pick and choose what he wants in their book? You cannot say it is infallible and it doesn’t contain all truths at the same time. It contains the truth.
The Bible doesn’t contain all truths. It’s infallible and the word of God, but not everything of the Church is recorded in it. In the Gospel of John, for instance, it says all the miracles that Jesus did couldn’t be contained.