Genuine Corinthian Leather isn’t in Scripture either.
Nor should it be.
Using the word “bible” is simply how we refer to the collection of Scriptures - not as the basis of any doctrine.
It is the Scriptures that are inspired and form the basis of the Christian faith.
Praying to saints is never found in the inspired Scriptures.
Not once.
And where does it say in Bible that EVERYTHING must be found in it? In fact the Bible itself says it doesn’t contain all of what Jesus did in John 21:25.
That is why faith comes through hearing, not reading. You have to be taught, and not everything is in the Bible.
Here is a link to help explain:
https://www.catholic.com/magazine/print-edition/a-quick-ten-step-refutation-of-sola-scriptura