Although quantum mathematics is the most successful science ever, that does not mean we live in the universe described by quantum mechanics.
The reason is symmetry. Two symmetrical universes could have exactly the same mathematics, but differ in other respects. The motivation for seeking symmetry inside quantum math is that the QM picture of nature is bizarre. Richard Feynman says no one can understand it. I say Nature is not bizarre. QM portrays the wrong universe: the symmetrical one, not the one we inhabit.
If waves travel in the opposite direction as what the experts think, they are called “Elementary Waves.”
This produces the same math but a different universe, one that is recognizable and familiar. It gives us a picture of nature that is easy to understand. It feels comfortable, like home. This is a rogue theory that is denounced by the leaders of science, but is fun to explore.