A genuinely niche site often lives or dies by the long tail, since the broad terms in its category may not exist in meaningful volume at all — the opportunity is almost entirely in the specifics.
Accept That Volume Will Be Modest
In a true micro-niche, individual long-tail terms may have very low search volume, and that's expected rather than a sign the topic isn't worth covering.
Cover the Topic Comprehensively Anyway
Thorough, specific coverage of a micro-niche's full long tail builds topical authority that a broader, shallower competitor can't easily replicate.
Let Depth Compensate for Narrow Volume
A large number of low-volume long-tail pages, each well optimized, can add up to meaningful traffic even without a single high-volume term to anchor around.
Next step: Use the Longtail Keywords Tool to map out the full long-tail landscape of a specific niche topic before you start publishing.