When implementing widgets such asrefinementListwithindynamicWidgets, a dedicatedrenderingContentparameter determines whether the facet will be displayed.
You can confirm by looking at your dashboard configuration tab (in the "Facet display" section) that no attributesForFacetingare currently selected to display:
In this documentation, you can find detailed implementation steps on how to display the desired attributes for faceting via either the dashboard or the API.