No they don't contradict Scripture because there's no Scripture to tell us that we have to add tradition to Scripture and there's no Scripture that tells us that works save anyone.
The word *trinity* isn't in Scripture and the Catholic church teaches that.
The term *pope* isn't in Scripture and the Catholic church teaches that.
The ideas of the immaculate conception, the perpetual virginity of Mary, the assumption of Mary are not in Scripture and the Catholic church teaches that.
Your argument that *sola Scriptura* and faith alone aren't in the Bible and contradicts Scripture is laughable in light of all that the Catholic church teaches as true that can't be found in the Bible and outright contradicts it.
People who live in glass houses shouldn't throw stones.
Yes, the Church does teach much more than the content of the scripture. I never claimed otherwise. But the Church never adopted the false standard of "Sctripture alone". You did. You, the Protestants, should be measured by the yardstick you claim, Bible Alone.
The standard of the Church is that the scripture is an important part of the teaching of the Church but it is not the whole of it. Therefore, there are things that the Church teaches that are not in the Scripture, not only the Holy Trinity but also the Immaculate Concpetion, the lifelong virginity of Mary, or the infallibility of the Pope in certain matters, etc. We do not teach anything that contradicts the Scripture, but we sure teach things not in it.
The Protestanism, in contrast, does not pass its own yeardstick. According to James 2:14-26, and 2 Tim 3:14-17,among many other passages, the Faith Alone and Bible Alone contradict the scripture, and of course are nto supported by anything in the scripture.
there's no Scripture to tell us that we have to add tradition to Scripture and there's no Scripture that tells us that works save anyone.
2 Thess. 2:14 for the former and Matthew 25:31-46 for the latter, although we do not teach that works alone save.