The mud the footprints impressed themselves into are determined by two independent studies and multiple lines of evidence to be between 21k and 23k years old. The wet mud and the people who made the footprints had to be roughly contemporaneous.Carbon-14 is total garbage if you are trying to date something for which carbon-14 cannot be used. Did you say that FOOTPRINTS were dated?
No one is stopping you from going to New Mexico, collecting and analyzing your own samples, and publishing your results in a reputable scientific publication.