In acts the church was synodal, without Peter as the head. The Roman Catholic Church abandoned the synodal structure and started innovating to power grab. Papal primacy existed, but papal supremacy and papal infallibility did not exist in the first thousand years of Christianity. The original justification for these innovations were based on now admitted papal forgeries.

The Vatican admits these in these two semi recent documents attempting to reunite East and West.

Here’s the Chieti document

Here’s the Alexandria document

In both of these the Vatican concedes to most of the Orthodox criticism over the past thousand years. They admit the early church was nothing like the Vatican operates now; that they based their power originally on forgeries (why would the pillar and ground of truth need forgeries to seize power?)

That’s your Vatican saying it too; you don’t have to take my word for it.