Peter was martyred at Rome, where he was bishop, in 67 A.D. His martyrdom was prophesied by our Lord - twice in fact (Jn 13:36; 21:18).
The Church is built upon the foundation of the apostles with Christ as the cornerstone (Eph 2: 19-22). Our faith is based on their eye-witness testimony. and our doctrines and practices are based on their oral and written teachings. The apostles’ names are inscribed on the foundation for the New Jerusalem, that is the Bride of the Lamb, the Catholic Church (Rev 21: 9-10,14). Indeed, we are a holy priesthood in the Church by participating in the principal mediation of Christ by offering spiritual sacrifices, prayers, petitions, and thanksgiving for the salvation of all men and women. The Blessed Virgin Mary leads us in the order of grace by virtue of her divine maternity.
I think you should reopen your Bible, not that it may do you any good. Sacred Scripture must be interpreted in light of Sacred Tradition. This is a maxim of the Apostles who wrote the New Testament and the Church Fathers. Anyway, Jesus himself charged Peter to feed his sheep (Jn 21:15-17). And our Lord prayed for him that his faith would not fail, so that he could strenghten his brothers in the Faith (Lk 22: 31-32). Peter certainly rose to the occasion in his divine call when he was the first to speak for all of the apostles at Pentecost (Acts 2:14). Earlier on, it was Peter who initiated the successor to Judas and thereby implemented the institution of apostolic succession in the Church leadership (Acts 1:15). And it was Peter who performed the first miraculous healing in the name of Christ (Acts 3:6-7). And wasn’t it Peter who was the first to declare an infallible truth revealed to us from God, on which our Christian faith ultimately rests, when he professed Jesus to be
the Son of the living God (Mt 16:16)? And we know what has followed ever since Peter’s declaration of faith, which includes our four Marian dogmas. By the way, the Pope is an elder among elders, a bishop (of Rome) among the bishops of the world in the Catholic Church, which was founded by our Lord Jesus Christ - not some independent religious thinker or free-wheeling pastor.
But this is off-topic. If you wish to contest the primacy of Peter and the problem you have created of the biblical church, then start another thread or join one on these topics. Let’s not have this thread derailed.