It depends on your perspective. Some might think so, while others might have doubts based on various factors like the hero's actions and character development.
There were a few novels to recommend, including Douluo: I was chased by Qian Renxue at the beginning and The Book of the Confucian Sword. These novels told the story of the protagonist turning from an ordinary person to a hero. The plot was fascinating and suitable for readers who liked this kind of genre. In addition, there were other novels that involved the plot of a hero turning into a villain, such as " The villain chased the hero into his wife " and " I became the villain at the beginning." These novels might satisfy your interest in hero-to-villain stories.