you forget that you are roman catholic
He is a Latin Rite Catholic Church. Not all Catholics are Roman. We got the Byzatine Catholic, and other 22 Eastern Catholic Churches.
The Catholic Church was first used in 110 AD by St. Ignatius of Antioch (a disciple of St. John the Apostle). Here is a quote for your thought. It’s from The Epistle of Ignatius to the Smyrnaeans circa 110 AD.
St. Ignatius of Antioch:
See that you all follow the bishop, even as Jesus Christ does the Father, and the presbytery as you would the apostles; and reverence the deacons, as being the institution of God. Let no man do anything connected with the Church without the bishop. Let that be deemed a proper Eucharist, which is [administered] either by the bishop, or by one to whom he has entrusted it. Wherever the bishop shall appear, there let the multitude [of the people] also be; even as, wherever Jesus Christ is, there is the Catholic Church. It is not lawful without the bishop either to baptize or to celebrate a love-feast; but whatsoever he shall approve of, that is also pleasing to God, so that everything that is done may be secure and valid
The claim you made that the Catholic Church was founded in 400 is historically inaccurate. The Church had its foundations on Jesus Christ, who build his Church upon Peter the first Pope.
Consider these quotes from the Early Christians. Polycarp and Ignatius were both martyred for their faith. Polycarp was burn at the stake but the fire could not kill him so the guard stab him to death. Ignatius was eaten by the Lions.
“[A]ll the people wondered that there should be such a difference between the unbelievers and the elect, of whom this most admirable Polycarp was one, having in our own times been an apostolic and prophetic teacher, and bishop of the Catholic Church which is in Smyrna. For every word that went out of his mouth either has been or shall yet be accomplished.” Martyrdom of Polycarp, 16:2 (A.D. 155).
“…to be in honour however with the Catholic Church for the ordering of ecclesiastical discipline…one to the Laodicenes, another to the Alexandrians, both forged in Paul’s name to suit the heresy of Marcion, and several others, which cannot be received into the Catholic Church; for it is not fitting that gall be mixed with honey. The Epistle of Jude no doubt, and the couple bearing the name of John, are accepted by the Catholic Church…But of Arsinous, called also Valentinus, or of Militiades we receive nothing at all.” The fragment of Muratori (A.D. 177).
“[N]or does it consist in this, that he should again falsely imagine, as being above this [fancied being], a Pleroma at one time supposed to contain thirty, and at another time an innumerable tribe of Aeons, as these teachers who are destitute of truly divine wisdom maintain; while the Catholic Church possesses one and the same faith throughout the whole world, as we have already said.” Irenaeus, Against Heresies, 1:10,3 (A.D. 180).
“For it is evident that those men lived not so long ago,–in the reign of Antoninus for the most part,–and that they at first were believers in the doctrine of the Catholic Church, in the church of Rome under the episcopate of the blessed Eleutherus, until on account of their ever restless curiosity, with which they even infected the brethren, they were more than once expelled.” Tertullian, On the Prescription Against Heretics, 22,30 (A.D. 200).
”Whence you ought to know that the bishop is in the Church, and the Church in the bishop; and if any one be not with the bishop, that he is not in the Church, and that those flatter themselves in vain who creep in, not having peace with God’s priests, and think that they communicate secretly with some; while the Church, which is Catholic and one, is not cut nor divided, but is indeed connected and bound together by the cement of priests who cohere with one another.” Cyprian, To Florentius, Epistle 66/67 (A.D. 254).
“But for those who say, There was when He was not, and, Before being born He was not, and that He came into existence out of nothing, or who assert that the Son of God is of a different hypostasis or substance…these the Catholic and apostolic Church anathematizes.” Creed of Nicea (A.D. 325).
Don’t make a false assumption that the Catholic Church was founded in 400 AD. Any historian will tell you that is not a true statement.
You already make yourself look like a fool here by thinking that the RRC was founded by Constantine. He didn’t. There was already a Church established and they had a Pope then. Guess who the Pope was in the 325 AD? Pope St. Sylvester I was the 33rd Pope, before him St. Miltiades, and there were Popes before him too dating back all the way to Peter. Source Pope Lists:
newadvent.org/cathen/12272b.htm