Oh boy, here we go again…
There is indeed male and female, but gender is different from biological sex. Your gender is more of a way you express yourself SOCIALLY. BIOLOGICAL SEX is COMPLETELY different than gender.
There are also many other gods believed in, and sometimes, no god at all. Just like Brahman or… I don’t know, Zeus and whatnot! How can you be sure God created it at all? Not trying to go against your religion, I am just saying there are other gods out there each with its own believers. Also, not everyone is going to agree with the same thing you believe in. Trying to use that as a reason doesn’t really do much.
Also, people who are intersex exist, in case you didn’t know. They have a mix of both male and female chromosomes and such. And they were born that way! So…