You are blaming the Church for the existence of heretics. Why would you trust bishops to compile the books of the Bible?
The Arian heresy is a good example of where heresies come from, and how the historic Church dealt with it. You seem to have your own private history so discussion on anything historical is pointless.
Posting things like "They believed they had the authority to undo what the Apostles said at that council." is not important, but it's just another anti-Catholic trolling zinger. You post it anyway. Then you go on to reject the Council of Nicae.
Arius was deemed a heretic and excommunicated. Your false history is annoying. Another falsehood. Constantine went to the Pope and they agreed a council was needed. It is impossible to convene an ecumenical council without papal approval. Again, your history is fabricated. Constantine may have been present at the Council of Nicae, his concern was for temporal order, but he had absolutely no spiritual jurisdiction. You have no evidence that he did. His name is not even mentioned in any of the canons.
The reason why Emperor Constantine collaborated with the Pope and called the Council of Nicaea was to resolve the controversy over Arius’ teaching that Christ Jesus was not consubstantial with God the Father. Therefore, it then follows that for there to have been a heresy or even a counter belief to create a controversy, there must have been prior to Arianism a well-established belief about the nature Jesus Christ in a Church community that all agreed with this understanding.
Your false history denies this. Otherwise, the teachings of Arius would not have caused such a controversy.
The assembly of bishops proves that there were well-organized dioceses and churches
prior to the First Council of Nicaea who was in agreement with each other. Further research into this area will demonstrate the precise areas in which they agreed, such as the Real Presence of Christ in the Holy Eucharist, about many of the books which were thought to be inspired Scripture, and the Bishop of Rome being the successor of Peter and the head of the universal Church. Your fabricated early church history denies the facts.
Catholics don't "consume blood". We eat His Flesh and Drink His Blood in the form of consecrated Bread and Wine, as He commanded. This has not changed in 2000 years, and the evidence is there for anyone who wishes to see it.