Be of good cheer! Protestants aren’t wrong about everything. And you good folks are considered Christians by the Catholic Church by reason of your trinitarian baptism.
Catholics do not claim that the Church is right about everything all the time. There are many things the Church says nothing about because it cannot know if some things are true or not. What the Church claims is that it right about those things that Christ has revealed to it, either through the Scriptures or the oral Tradition of the Apostles and their successors (the preaching of the word), and the decisions of the Magisterium (the teaching organ of the Church).
The things the Protestant churches have gotten wrong are those things they rejected when they split from the Catholic Church, and no I don’t mean things like the selling of indulgences (which was never sanctioned by the Church). When Luther and others decided to look solely to the Bible (rejecting centuries of Sacred Tradition passed down by the Apostles and Church Fathers), they opened a Pandora’s box of dissent that has led to the fracturing of Christianity into thousands of denominations and sects, along with several outright heretical groups.
So, I say again, be of good cheer! Learn what the Catholic Church teaches and why and I’m sure you’ll see that it is right and proper and what Christ himself wanted for his Body and Bride, the Church.