Matthew 16:18
And that proves... what exactly?
No mention of Popes or Vatican or canons or bishops or infallibility or Roman Catholic, just one verse that half your Catholic early church fathers claimed was Peter’s confession of faith.
And Peter himself says the rock is Christ anyways.
Even if we were to accept anything special about St. Peter, who is a better successor? Someone who claims to foow the teaching of the Apostles while wantonly sinning, or someone who actually DOES follow what they taught?
Try again.