You are not impressing anyone when you claim that you don’t have the ability to read the Bible for itself but you do have the ability to study all of Christian history and identify the supernatural office that can tell you what to think.
If you can really read and argue from history in the hope of persuading others, then why not simply argue for your views from Scripture? If you aren’t following your own authority in deciding which church to submit to then how are you following your own authority when you read the Bible and believe what it says? If you are willing to argue over the meaning of the last papal writings, why not argue over the meaning of Scripture?
The fragmented nature of the Catholic Church and the Orthodox churches gives the lie to the “unity” narrative. And yes, you think you can interpret history perfectly, but not the Bible…patently absurd.