Upon this rock I shall build my Church...that was the beginning of the Catholic Church, period. Jesus did not just speak figuratively, but literally as the Basilica was built upon Peter’s grave. You cannot win against God friend.
Indeed we cannot win against God and which is why you should not be part of a system in which distinctive Catholic teachings are not manifest in the only wholly inspired substantive authoritative record of what the NT church believed (which is Scripture, in particular Acts through Revelation, which best shows how the NT church understood the gospels).
Whether or not the Basilica was built upon Peter’s grave is a matter of dispute, not fact, yet regardless, the NT church never taught that Peter was the "rock" of Mt. 16:18 upon which the church is built, interpreting Mt. 16:18, rather than upon the rock of the faith confessed by Peter, thus Christ Himself.
For in contrast to Peter, that the LORD Jesus is the Rock (“petra”) or "stone" (“lithos,” and which denotes a large rock in Mk. 16:4) upon which the church is built is one of the most abundantly confirmed doctrines in the Bible (petra: Rm. 9:33; 1Cor. 10:4; 1Pet. 2:8; cf. Lk. 6:48; 1Cor. 3:11; lithos: Mat. 21:42; Mk.12:10-11; Lk. 20:17-18; Act. 4:11; Rm. 9:33; Eph. 2:20; cf. Dt. 32:4, Is. 28:16) including by Peter himself. (1Pt. 2:4-8) Rome's current catechism attempts to have Peter himself as the rock as well, but also affirms: “On the rock of this faith confessed by St Peter, Christ build his Church,” (pt. 1, sec. 2, cp. 2, para. 424) which understanding some of the so-called “church fathers” concur with.)
Without the righteousness of Christ YOU cannot approach God. ONLY God can impute the righteousness of Christ to YOU. Has He?... And just so you’ve been told, GOD only imputes the Righteousness of Christ to a lost sinner ONCE. Do do overs. And GOD has told you how you receive that Precious Righteousness, and it ain’t by wortks you have or will do for you cannot justify yourself to a Holy God since YOU have no righteousness unless GOD imputes it to YOU, and never as an exchange function, only as Grace which glorifies Whom HE sent for YOUR Justification.
“This Rock” is NOT Peter.
You have a Catholic misinterpretation of scripture, used to justify Rome.
“This Rock” from scripture is Peter’s answer to Yeshua, NOT Peter.
And Peter’s answer, the answer Yeshua said was “this rock”, was “the faith that YOU are the Christ”. That faith, that belief, that Yeshua (Jesus to the Greeks and Romans) is the Christ. THAT, not a building, not a person is THE ROCK of Christ’s Church.