A simple answer might be to start something new rather than correct an existing church. That has been tried, but the results have been disastrous.
According to Joseph Smith (1805-1844), in answer to his prayer about which denomination to join, God and Jesus appeared to him in visions. They promised to use him to re-establish true Christianity. By 1829, he had produced the Book of Mormon in the U.S. state, New York. It and similar books purported to be another ‘Bible’ for these “latter days”—hence his church’s name “The Church of Jesus Christ of Latter-day Saints.” In Smith’s new ‘Scriptures’ the heavenly Father is flesh and blood, having sexual relations. Mormon males eventually become similar gods, creating and populating their own worlds. Smith’s revelations excluded Blacks from his priesthood. Facing modern challenges, his successor Prophet Kimball conveniently received another revelation reversing Smith’s racial doctrine. Mormonism’s growth relates to its program that sends out its young men as missionary ‘elders.’
In the meantime, others were seeking clarity in other ways. Another American, William Miller (1782-1849) launched the Adventist movement when he used the Bible to predict Christ’s return by March 1844. Though disappointed, his followers continued to make predictions. One, Ellen White, considered a prophetess, wrote books that still guide the Seventh Day Adventist Church (established 1863). Charles Taze Russell (1852-1916) and his successor Joseph Rutherford (1860-1942) started the Jehovah’s Witnesses (named in 1931) with its literature branch, the Watch Tower, headquartered in Warwick, New York. They produced a new ‘translation’ of the Bible that reflected their unusual doctrines that included downgrading Jesus to ‘a god.’