Why do you define the church in an unbiblical way?
Really? The Bible defines church as “only invisible?” Were the apostles whom Christ gave the command to “feed my sheep” invisible?
The church is the body of Christ consisting of all who have been united to Christ by faith. The body of Christ goes beyond Roman Catholic Christians in your view, right?
The Body of Christ, is simply, His Church. Believers may be either fully united to His body, or only partially united, as our separated protestant brothers and sisters
Christians are united to the person of Jesus Christ and not to the Roman Catholic Church
Christ and His church are one

Just as a bride and bridegroom are one.
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Do you see the biblical difference? Jesus is the head of the church and not your Pope.
You’re right… Jesus is the head of the Church! The pope is His servant, commanded to hold the keys to the kingdom until His return in glory

“Feed my sheep.” He didn’t say “feed YOUR sheep…” He said “Feed MY sheep.” He didn’t call us Peter’s sheep, but His…tended to by Peter, our shepherd…But Christ is the ultimate, Good shepherd.
The Holy Spirit is the true vicar here on earth.
The Holy Spirit is working THROUGH people…He can work through fallible people for His infallible purposes and truth
This is not written to fight you, but to challenge your exclusive Roman Catholic ideas.