Masterclass.com describes Western Fiction as follows:
What Is the Western Genre?
Western is a literature, film, and television genre. Westerns are primarily set in the American Old West between the late eighteenth century and late nineteenth century and tell the stories of cowboys, settlers, and outlaws exploring the western frontier and taming the Wild West.
We can’t do any better than that so why bother.
We rarely have books in this genre and they sell right away. We will keep looking.