How do you know that Arius wasn’t right?
http://arian-catholic.org/
A quote from that site:
“teaching that Yeshua was a man to be followed not worshipped”
John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
Scripture clearly states that Jesus was the Word and the Word was with God and the Word was God. One doesn’t need to read further to understand that the Arian Catholics are in error.