The pretribulation rapture has only been a doctrine since 1830. The pretribulation rapture was not a doctrine for 1,800 years of Church history.
If you had asked a scholar in the 1400s or the 1600s, they would have gone blank on you. A woman in Scotland had a vision in 1830 of the pretribulation rapture.
A few teachers, John Darby and Scofield, got hold of it and made it famous. It was a heresy to most people. By around 1930, it became established, but mostly only in America.
It’s not a doctrine that’s widespread around the world, except for the places where American seminaries have taken it. ~Mike Bickle