The US is not a democracy it is a constitutional federal democratic Republic. As Alexander Hamilton and James Madison made clear in the Federalist Papers, the essence of this republic would consist—their emphasis—"
IN THE TOTAL EXCLUSION OF THE PEOPLE, IN THEIR COLLECTIVE CAPACITY, from any share” [in the government.]
Instead, popular views would be translated into public policy through the election of representatives “whose wisdom may,” in Madison’s words, “best discern the true interest of their country.” That this radically curtailed the degree to which the people could directly influence the government was no accident. (Cite: The Atlantic March 2018 "America is Not a Democracy").
However, with the advent of economic inequality, the wealthy have found many avenues of control so as to in effect make our country even less democratic. (Cites: See these books: Democracy In Chains, Nancy MacLean; Dark Money, Jane Mayer)