I understand what you believe, but you are simply making assertions. Popes make claim what they will, and you may accept what they decree, but even Jews and its Majisterium, which again, unlike the Pope, the Bible explicitly affirms were given the stewardship of the Hebrew Scriptures, were not necessarily true Jews due to that fact, let alone infallible guides, and were reproved to adding to that which was written. (Mt. 15:1-9) And thus, regardless of the inescapable problems with false seekers, all such men are to be examined by that which is affirmed to be infallible, as the noble Bereans exampled, and which use of authority the Lord and His apostles validated.
Nor does discerning what is inspired of God, or ratifying what others have affirmed, confer authority, else we should all be Jews, and even demons recognize who the true God is. God operates by demonstrating who and what is His, and and those who follow Him are evidenced to be doing so by their conformity to that which was already established, and according to the principle of Jn. 8:31,32, it is these who recognize the totality of what is Truth. And functionally these operate within the one true universal church, built upon the essential faith which Peter confessed, manifest in visible organic bodies.
In contrast are those who rest upon pedigree, (Jn. 8:33 and Mt. 3:9) and those who presume to a position whereby they alone are the supreme authority, and teach for doctrines the commandments of men. Such shall be abased in the end.
The simple fact is that the Scriptures did not fall from heaven but are words written in paper by men and are interpreted by other men. It is only by accepting the authority of men that we know what is Scripture, and we only understand it if others tell us what the words mean.