The Gender filter in the Creator Filter section limits results to male or female creators. The selection is applied directly in the sidebar and can be cleared by clicking the active option again.
The gender is an automatically detected attribute of the profile. Profiles whose gender cannot be classified with sufficient confidence are excluded when a gender filter is active — so an unfiltered search always contains more profiles than the male and female result sets combined. To filter by the audience's gender ratio instead, use the audience gender filter in the Audience section.