more genetic difference within races than between them is an irrelevant and misplaced point
that's the norm in fact for many subspecies in the animal kingdom
rest of what you said has to do with the history of the word "race"
which is mostly semantics
when people say "race is real"
they mean in practice
if you pick 10000 individual germans,Nigerians and Japanese
and make them go through different tests
there's gonna be visible and quantifiable differences, physically, phenotypically, mentally and behaviorally