TRADITION!!!!! I think that's a line from a movie....anyway, as the church grew over the years and centuries, those in charge passed on their teaching authority to newcomers who learned of their ways and accepted their teachings. Kind of like the way every successful organization does things. If you looked across the street and decided that you were entitled to teach their followers whatever you thought was right, you'd be wrong. The Magisterium of the Catholic church and only they, are authorized to pass to those in the future, the powers granted to them by Christ. You may want to do it....but you can't.
Fortunately, just because you and the Catholic Church say so doesn't make it true.
As far as your reliance on tradition, I think Paul had such an attitude in mind when he warned,"Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
https://www.youtube.com/watch?v=7V2lxFWBqfI