The Council of Trent set the Canon of the Bible in stone, never to be added to or subtracted from ever again. Sorry you don’t believe the truth.
for Catholics
Well, if at first you don't succeed try, try again.
When it comes to what we call the OT canon, I think Jesus is the Final Authority:
Luke 24 (DRA):
44 And he said to them: These are the words which I spoke to you, while I was yet with you, that all things must needs be fulfilled, which are written in the law of Moses, and in the prophets, and in the psalms, concerning me. 45 Then he opened their understanding, that they might understand the scriptures.