Out of context. The verse you allude to here refers to two or three living breathing witnesses that the judge can interrogate. Not three verses, no matter they be from the Bible.
Which would be just fine IF you also bothered to quote some of the verses favorable to tradition rather than try to imply that the Bible is only and always against tradition.
So here's Paul:
1 Cor 11:2 Hold fast to the traditions I handed on to you.
2 Thess 2:15 Hold fast to traditions, whether oral or by letter
2 Thess 3:6 Shun those acting not in accord with tradition.
2 Tim 2:2 What you have heard, entrust to faithful men.
Peter had some things to say about private interpretation:
2 Peter 1:20 No prophecy is a matter for private interpretation.
2 Peter 3:15-16 Paul's letters can be difficult to interpret.
1 Peter 1:25 God's eternal word is the word preached to you
Problem is that you have equated 'tradition' with the 'tradition of men' and that is not quite true. So your whole edifice built on attacking tradition is itself a crumbling old tradition of men. One we shouldn't be relying on. So instead of the half-council of God with respect to tradition, you need more. More from Paul. More from Peter. More from all over the Bible. You have labored to produce ... a tradition of men that says valid traditions should be set aside. And setting the tradition of the Church aside has damaged your own belief structure for missing out on parts of the truth. It's a methodological thing.
Paul clearly has a place for tradition. And that faith comes by hearing the tradition handed on to faithful men, not just what is between the covers of the KJV. Peter puts a damper on the idea of private interpretation, which is exactly what Sola Scriptura is for most Sola Scriptura adherents, the idea that no man and no tradition can get between you and what you think your Bible is telling you. He expects that the preaching of the gospel will be an oral transferal from apostles and apostolic delegates and bishops to new believers, a conveyance of tradition
I keep bringing up that almost forgotten line from Judges 21:25. Everyone did whatever seemed right in their own eyes. Problem with that was lots of people did lots of different things that were not right in the eyes of the Lord. It was an anarchy, which is just fine if everybody is all lined up to actually know and do the right thing. Problem is when they don't know or don't do the right thing. Which is what we have with the Sola Scriptura crowd that rejects wise counsel and cooks up whatever interpretation they want to cook up. No wonder Paul insisted on following tradition. No wonder Peter was against private interpretation and cautioned against go it alone interpretations.
Are there 'traditions of men'? Yup. And one of the biggest of those is an unbiblical meta-dogma called Sola Scriptura. It supposedly speaks against 'traditions of men' but instead speaks against apostolic traditions. It encourages division every time two people have a difference of interpretation as they have no authority to arbitrate their difference, just the text they cannot agree on. It encourages people to be very selective on their use of scripture, ignoring parts they can't integrate into their pet theology. And it's prideful. Scripture is incredibly complex. For someone to say they have it all figured out is impossible. It's difficult enough for the whole Church. For one guy and his Bible it just makes no sense. But, at least in the more common ways of understanding Sola Scriptura, it IS one man and his Bible.