In Matthew 16, Peter is given the keys of the kingdom after confessing Jesus as Messiah and Son of God. It is true that Peter and the other Apostles are the foundations of the church. Yet, with regards to any authority given in this verse, it is given to other Christians in the context of dealing with unrepentant sinners in Matthew 18:15-20.

Interesting interpretation. So your group finally “got it right” after 1500 years? Is that your argument, just to be clear?
In regards to John 21, wouldn’t it make more sense given Jesus asking Peter 3 times “Do you love me” that Jesus is reassuring Peter and the others that…
Where are these others in the dialogue? I just see Christ speaking to Simon Peter…
How do you know that you’re right about the Catholic Church’s authority?
Christ put his personal guarantee on the perpetuity of the Church. If one’s flavor of Christianity doesn’t have a founding date of approximately 30AD with demonstrable existence throughout the centuries from then to present, then their “church” cannot be Christ’s Church.
This leaves only three communions to choose between.
When it comes down to it we all have to believe God will guide us into all truth,
The assertion of personal revelation conflicts with the establishing of the offices of the Church. It has also been the seedbed of heresy for all time.
and I do believe that those who read the Bible truly yearning to know God’s will will find it.
I potentially agree here, but theirs is a more perilous path as it is outside of confines of Christ’s Church. Their path meanders closer to “self”; vis-a-vis, hell.
The Bible is, however, sufficient in containing everything we need God to tell us for salvation, for trusting him perfectly, and for obeying him perfectly.
So what about the 350 years the Church existed prior to the Catholic Church giving us our canon?

What about Christians that lived and died prior to some NT books even being written? If a copy of Paul’s Epistle to Laodicea was found, would you admit it to canon? Why was one book admitted and another not?
If what you’re saying is true, Christ had no need to appoint apostles. He would have just written a text and promoted it.
I accept denominations as convenient tools for the church to structure its work and ministry.
As many have fundamental disagreements concerning soteriology (how one is “saved”), denominationalism is potentially a great recruiting tool for hell.
The biblical authors… do not tell us that any successors of Peter or the other apostles would continue to pronounce authoritative divine revelation.
They also do not tell us that God stop talking to his Church… Please, no arguments from silence, Itwin. They can be used to argue literally anything.
I’ve always found the “bible and me” approach to Christianity a little comical as textual literacy being common across wider humanity wasn’t a “thing” until almost within living memory…

You’d have needed to go to academy before you could become a Christian.