is this from analyzing dna outside of europe? if this information only came from analyzing european dna then during the bronze age all males in europe were effe

is this from analyzing dna outside of europe? if this information only came from analyzing european dna then during the bronze age all males in europe were effectively eliminated. this would imply that the eurasian steppe men who replaced them were the source for the neanderthal dna. this implies that the prior to this event europe was populated with people with no neanderthal dna.