What you mean is it is not Roman Catholic truth...There is No evidence that Peter was ever Bishop of Rome. NONE..
I know you're taking a lot of heat lately, try to not let it get you down. There are a lot of Born Again Christians who really don't know the history of Christianity, or what the RCC demands it's adherents believe.
Scripture does not substantiate the perpetuated Peterine papacy of Rome. The Bible is clear that Jesus is THE ROCK DT. 32:4, ICor. 10:4, which Peter also attests IPt. 2:8. Not one command is given in the NT for the church to submit to Peter as it's "supreme leader", or one example of it. Peter refers to himself as an "elder", "apostle" and a "servant" IPt. 5:1, 2Pt. 1:1 and he was married Mt. 8:14, ICor. 9:4. Also, he would not let a man bow down to him Acts 10:25-26.
IOW, even if there were some historical evidence that Peter founded and ran the church in Rome during the Apostolic Era there is no support for what it has devolved into.