Your first sentence is a stopper, “relying on what Jesus and the apostles taught.”
But it is the Catholic Church that infallibly assembled the canonical texts and told you what Jesus taught. Instead, you take upon yourself this “infallible” authority given only to the Church under Petrine authority to tell us what is true and what is false according to “you.”
What you don’t seem to understand is that the Moonies, Jehovah’s Witnesses, etc, David Koresh etc all think that what “you” interpret is false.
This is why Christ made sure that there is only ONE truth by entrusting this to His ONE Church. This is the Church of saints, martyrs, stigmatists and the Church of the early Fathers. You cannot rebut this. Since lf you dispute the infallibility of the Church in selecting what books should be excluded and what should be included in the canonical texts, then you may be relying on faulty information.
This is why after a lifetime of study eminent Protestant theologians who set out to prove Catholicism wrong ended being converted to the Catholicism.
That doesn't work like you seem to want it to Steelfish. It was the Jews which were entrusted with the oracles of God. Which for sure covers the Old Testament and also which did NOT include that apocrypha. So right there we have the Catholic Church adding to the words entrusted to the Jews by God. Then you have the problem with what was considered scripture by the apostles themselves. Not only did Jesus choose the apostles but told them the Holy Spirit would help them remember what He had taught "while He was with them.
Both the Old Testament and the New Testament was considered scripture long before the Catholic Church declared what they considered scripture which included books that were not considered scripture by those entrusted by God with what scripture was.
Bragging about the Catholic Church bringing us scripture is like bragging that Pontius Pilot brought us salvation. God used many evil men and groups of men to advance His will throughout History. Being one of them in no way guarantees current correctness.