no, it doesn’t help because it doesn’t answer my question.
you indicate you know history. if so, you are aware that many books claim to be Scripture or were at one time believed to be Scripture, yet are not included in the NT canon. you are also aware that there is not one book of Scripture that contains a table of contents for the canon. so if you agree with the above statements, there must be someone or something that can once and for all declare the canon infallibly, someone or something with authority that is not from man. my question is, who is this authority for you? no one? ( which means we aren’t sure if what we have called “Scripture” is really Scripture ), yourself? ( not sure what basis you would use ) or someone else?
pretty straight forward question, would seem pretty easy to give a straight forward answer.
Sounds like you need to take a good solid course in the origin of Scripture, not sponsored by Rome. I spent three years doing this and found the claims of the RCC to be utterly without foundation.