I can try, but I don’t know how clear this explanation will be.
The toe, heel and pivot only rotate so they don’t help in moving horizontally. The torso controls the horizontal location of the body minus the legs. The offsetting of the torso and feet is what moves rivet. horizontally. It might be clearer if you don’t use the offset for the torso and ik bones and see what happens, just set them up to cycle without it then it would be more like the stomp cycle.
if it is still unclear, I can try explaining it differently.
What. do you. want to do in VFX?