Would these church teachings be something not revealed in the scriptures?
Is the pope getting new revelations from God?
All scripture is inspired by God and profitable for teaching, for reproof, for correction, and for training in righteousness
I warn every one who hears the words of the prophecy of this book: if any one adds to them, God will add to him the plagues described in this book
Yes. You really should take the time to read all of Scripture.
From amongst many examples:
John 21:25 "But there are also many other things which Jesus did; which, if they were written every one, the world itself, I think would not be able to contain the books that should be written."
2 Thessalonians 2:14 "Therefore, brethren, stand fast; and hold the traditions which you have learned, whether by word, or by our epistle."
Matthew 14:26 "But the Paraclete, the Holy Ghost, whom the Father will send in my name, he will teach you all things, and bring all things to your mind, whatsoever I shall have said to you."
The Catholic Church codified and closed the body of Scripture. It was the Catholic Church which proclaimed that there was no new revelation. And yes, Sacred Tradition must agree with the Scripture. Sacred Scripture is brought to you through the Sacred Tradition and the Deposit of Faith.
It's fine that you have your issues with the Catholic Church, at least you're thinking about your faith, just don't make the mistake of thinking that anger and hatred and pride can change the heart of a Catholic because most people don't really know what Catholics truly believe (and that includes CINOs) and they don't bother to take the time to find out. They attack the Church and her beliefs on misconceptions and prejudice and think they sound erudite and pious and instead just sound pompous and ignorant.