@Phia In addition to @Luna’s excellent response, it is important to remember that even the Catholic Church did not recognize the apocrypha as Scripture until the time of Luther and they only did so as a reaction against the reformation. Throughout most of Christian history it was agreed that the apocrypha were useful for instruction and historical information, but not inspired Scripture. They were still included in various translations of the Bible, but it was generally accepted they were not inspired.
However, at the time of the Protestant Reformation, Martin Luther and the other Protestant reformers, in an attempt to promote their unique beliefs, had to omit certain books from Holy Scripture; the deuterocanonical books, or the Old Testament Apocrypha. They did this for purely doctrinal reasons. In response, the Roman Catholic Church held an official council at the city of Trent which made certain pronouncements about the canon. They stipulated that the deuterocanonical books, or the Old Testament Apocrypha, were indeed part of the canon of Scripture. Anathemas, or divine curses, were directed at those who rejected their pronouncements.
The canon (official content) of the Old Testament was agreed upon around 70 a.d. by Jewish scholars, producing the list of books we now know by the name of “Old Testament.” The celebrated Christian Bible scholar Jerome (c. 330-420 a.d.), based on his careful study of Hebrew (quite original for Christians at that time who were suspicious of Jews) and rabbinic writings, was in full agreement with the accepted Jewish Hebrew canon.
Since the Apocryphal books weren’t to be found in any Hebrew version of the Old Testament, Jerome determined that he would omit most of these extra books from his famous Latin translation of the Bible, the Vulgate, and what material he did include was clearly marked to show that it was not to be found in the original Hebrew manuscripts. His take on these books, which he labeled the Apocrypha (Greek for “hidden” or “concealed” or, as treated by Christians “withdrawn”) was that he considered them “edifying” (in the sense that you or I might think of Pilgrim’s Progress or In His Steps as edifying), but not to be used for establishing doctrine, since they were not inspired Scripture.
Do not have the source for this—but thought it is a helpful summary. Contained in some of my notes.