Basic reality check. The RCC of that era was astoundingly corrupt and not anything like something Jesus created.
Luther was right.
That is not to say that the RCC today carries the guilt of what they were doing back in that era. That would be completely unfair.
But the people you say Christ conferred authority on were no more legitimate than Luther. Honest people can debate about whether Christ conferred authority on anyone. But he absolutely did not set up a brutal feudal monarchy to be handed down through the years.
In math there is a basic principle. Look at the solution and see if it makes sense. You don’t need to know that 24 divided by 3 is 8, to know that 80 is wrong. The answer is absurd on its very face.
Look at the words, life and teachings of Jesus, then look at the papacy and the Roman Vatican HQ. That is the wrong answer on its very face and the near opposite of anything remotely associated with Jesus.
For example, he wasn’t wealthy. He never commanded military mercenary formations in the field. There is no basis to believe a building in his name should have jail cells.
Luther was a very bad dude in some ways, but he was right in leading a reformation. Islam really needs one.
That is the wrong answer on its very face and the near opposite of anything remotely associated with Jesus.
We can see by reading the Douay Rh-ems that they did not get their doctrine from their Bible.