I thought you wanted to know who decided Scriptural Canon before the Catholic church. My apologies.
I find it hard to believe that you were once a “Protestant” and are now catholic.
I have met many catholics in my life and they were all born and raised in that church and are raised believing that you can sin on Friday night and “just go to confessional to be forgiven.”
That is called trampling on the precious blood of Christ, which is a.k.a.: willful sin.
No Protestant I have ever talked to could ever accept that the pope is infallible. The pope is a man who sins. To say he doesn’t is blasphemy, plain and simple.
Blessings and Peace. KB