The Catholic church threw those books out in the Council of Trent.
It’s just that the bible you use keeps them in, despite their lack of canonical legitimacy, according to the Catholic church.
The deuterocanonical books were in the Septuagint Greek Old Testament, translated from the Hebrew and Aramaic a couple of centuries before Christ. The current Hebrew Scriptures were not fixed by rabbinical Judaism until about one century or so AD, so the deuterocanonicals are legitimately in the Christian bible. But Luther also wanted change the New Testament canon, calling St James an “epistle of straw” and calling for its expulsion.