QM is fundamentally not correct. They assume energy and matter is interchangeable, which is not. Build me a proton from energy and I will shut up, you can't. The appearance of positions can be explained much much much much easier, once you got your electron model correct.

When I studied physics I never saw the periodic table as the result of QM model, never made sense for me. Now I understand, thanks to a more advanced, but classical model.

QM and GR can never be unified because GR is a effect of surface pressure and QM has the wrong surface.