Gender norms are largely a social construct.. theres nothing genetic or biological about a suit being a mens thing and a dress being a girls thing.. the behaviours are also societal.
Gender identity is handled by the brain, it is pretty much rooted in biology and this is why you can have divergent Gender identities
Your race however is deeply rooted in your genetics, skincolor, family tree.
you can not just behaviourally change, you won’t stop being asian just because you wish to change that.. gender meanwhile from the beginning already was hardwired to be that… we are not changing the gender here we are simply making the body adhere to the gender that the person experienced all along.
Changing gender is kinda false, altering outward gender expression is what it should be called.