As was
Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat: (Matthew 7:13)
"Many" sadly includes vast majority of RCs (and plenty of so-called Prots), from popes to the latest proabortion, prosodomote promuslim RC pols whom she also treats as members in life and in death.
Based on Biblical history and a Biblical insight into the divine nature and character, I find it's dubious to assume that the Our Lord would let 100% of His Church go disastrously astray for, say, 1500-2000 years.
Not if the Church is the Body of Christ and we are His members.
Not if Our Lord is the Good Shepherd who would leave 99 sheep on the hillside in order to seek and search for even one which was lost.
Thank you, Lord, for that Church of yours revealed in Revelation, a great multitude of every race, tongue and nation, so great that no man could number it.