Here's what you need to understand about Catholicism: the laity doesn't make the doctrine, so they always make up dumb stuff like Wilgefortis or Santa Muerte. That's folk Catholicism, or what the church calls a "Catholic Cult," and they don't define Catholicism.
The clergy is corrupt and shiftless, but they also don't represent Catholicism. Judas was an apostle, and he didn't define Christ's ministry, did he? So even though a lot of the clergy is embroiled in abuse scandals, and the pope espouses liberal modernist universalism at every chance he gets, that's just the natural corruption of humans in power. It's a heresy (donatism) to believe the clergy must be blameless. The clergy is corrupt, and they don't define Catholicism.
What defines Catholicism is the dogmas, which you can read in the Catechisms. Just not the Vatican 2 ones. Those are modernist heresies, and if you take stuff like CCC 841 at face value, you're going to go wrong. Remember, that stuff was made by the corrupt clergy, and they don't define Catholicism.
Some people go to far here, and assume that we need to break away from the church because the clergy isn't even Catholic anymore. People like Sedevacantists, for example. Those guys are way off! Even though the clergy is corrupt and heretical, you can't break away from them. The Vatican still leads the church. If you're a sedevacantist, you're basically a protestant. You can't form your own church, even if you call it a Catholic church and you believe in traditional Catholic dogmas and you worship in a traditionally Catholic way and even if you trace your continuity to the Roman Catholic Church. Those guys are schismatics and they don't define Catholicism.
So what does define Catholicism? I do, and the Church Fathers (I haven't read all of them, but I know they are all in 100% agreement with both each other and with me) do, and all dogmas before Vatican II (such as the dogma of the Immaculate Conception from 1854) do. Those sources are where you can find the church as it was preached by Jesus Christ to the apostles. Current estimates say that I'm the only Catholic who's real.