Find a Dictionary of Psychology*.
Turn to the page containing ‘gender’.
Accept the fact it has nothing to do with sex.
Accept the fact that gender is entirely, 100% about the psychological* metric of continuum between the poles of masculinity and femininity. It is literally a spectrum. Plenty of feminine women wear trousers, doesn’t change shit.
Specialist terms have precise meanings.
You are wrong.
When you use such a term inaccurately, you are both ignorant and anti-science.
You mean something else? You use a different word.
That’s how language works.