Protestants are heretics, simple as. It doesn't matter if you are a baptist, pentecostal, calvinist, lutheran, presbyterian, anglican, episcopalian or any other of the thousands of Protestant denominations. You follow a 16th century heresy that was built on doctrines no Christian believed until Martin Luther the heretic came along.
The Church isn't some invisible and ambiguous body of believers. Christ gave us a Church and He gave it leaders that appointed and left successors. The Church is an institution, we can see councils taking place in Scripture.
>(Matthew 16:18): Now I say to you that you are Peter (which means ‘rock’), and upon this rock I will build my church, and all the powers of hell will not conquer it.
We have historical records of every single one of St. Peter's successors.
There are thousands of Protestant denominations that can't agree with each other on issues as basic as baptism, predestination, communion or salvation. Yet you claim that somehow, people who can't agree on all the truths that Christ revealed, are the true Church.
Sola scriptura is false, it is a logical fallacy. There was no biblical cannon until the 3rd century. The Catholic Church compiled the Bible and decided which books were and weren't divinely inspired. Tradition is as important as Scripture.
>(2 Thessalonians 2:15): So then, brothers, stand firm and hold to the traditions that you were taught by us, either by our spoken word or by our letter.
Many Early Church fathers mentioned the Catholic Church and the primacy of the bishop of Rome, like Tertullian, St. Augustine, Clement of Rome, St. Ignatius of Antioch, etc.