i know the problem, but some tights seem to hold their place, but it is per chance, I do not have a recommendation for good ones. But I guess wearing leggings is an option. On my legs the leggings do not slide downwards.
And a friend of mine wears another slipper over the tights to fix them. I never tried this out.
And another one uses snag tights, which are said to not slide…
I hope you find a solution (i would try the leggings if I were you), because dresses/skirts in winter are awesome.