If I had to guess I’d say that nobody has bothered responding to you with more than a single sentence because you clearly have internet access and could easily read about the history of US voting rights and the current state of US voting suppression, and that you therefore have no excuse for weighing in in a topic about which you clearly don’t know much, but that is just an educated guess.

Originally voting rights in the US were only extended to white male christian land-owners. Over the course of the next two centuries they gradually relaxed the property ownership requirements, then eventually got around to granting voting rights to non-white men and then women. In theory this would make the US currently a democracy, but in practice they suppress voting access in predominantly non-white districts through gerrymandering, and elected officials routinely act against the wishes of their constituents in favor of pleasing their billionaire donors. We transitioned from a fundamentally racist and classist republic to an oligarchy.