It's good of you to consider future newcomers to the site. One objection worth preempting here is the claim, so often heard, that before Queen Elizabeth (sometimes Martin Luther or Henry VIII are cited) there was no other Christianity than Catholicism. For fifteen or sixteen centuries in the Western tradition lies about The Bible were all there was. Eastern orthodoxies never had a reformation and comprise the majority grouping after the Romish Orthodox patriarch, styling himself "Bishop of Rome" and subsequently as a pope, hived himself off to form the Roman Catholic heresy EXCEPT THAT none of them followed The Bible so were all heretics.
They eventually excommunicated one another approx. 1 millennium ago.
So where did true Christianity come from? Why did Jesus wait another one-and-a-half thousand years, years of lies, torture, burnings alive, idolatry, chopping off of heads, extortion, the full works in fact, after not having Himself born from Eve following the original sin event to be murdered then, enabling Salvation for humanity from the outset?
Genesis 4:16-17 And Cain went out from the presence of the LORD, and dwelt in the land of Nod, on the east of Eden. And Cain knew his wife; and she conceived, and bare Enoch: and he builded a city, and called the name of the city, after the name of his son, Enoch.
Cain and Abel and their children, by accepting The Blood of Christ, could have been Saved® all those years ago. Eventually, these doubters claim, Jesus was born from Mary with the same outcome as if He'd been born from Eve. But then He waited so many more centuries, so many more lives wasted being taught lies and receiving false baptisms and in many cases being tortured to death or whipped mercilessly by sadists, burned alive at the stake, having their parents' heads chopped off and thrown into the gutter while bishops and cardinals and popes lived in revolting luxury year after year, century after century with no redress possible and torture or worse the certain response to suggesting that maybe answers were in order from such dissipated muck as the clergy proved to be.
But these are unreliable claims; even in The Bible one denomination is identified. Of course it wasn't a denomination then, nevertheless we know that Baptist was a thing from day one. Future newcomers reading through will know that, No: catholicism was not all there was. There were also Baptists and Anabaptists who did not accept the dogma of Rome (or Kiev or wherever else patriarchs had set themselves up) and not enough had their heads chopped to extinguish The Truth prevailing to this day.