“EVERYONE thinks his or her own individual interpretation of the Bible is the correct one. There is a lot of pride to go around”
You seem fixated on “individual interpretation”. Not sure where you’re getting that as there is nothing valid about that. Most individuals depend on the guidance of learned individuals. Bit it comes down to reading and praying. Listening to the Holy Spirit and seeking Gods wisdom.
Depending on the interpretation of some guy in Rome is not the mystical panacea.
“If you cannot find this teaching authority in the Catholic Church, where do you find it? Sincere question.”
Through personal study, group study, prayer, and worship with learned and Godly people. My salvation and communication to Christ does not require mediation through those people.