I am probably quite agender, as I have no intrinsic sense of my gender. I simply accepted my AGAB (assigned gender at birth) without questioning it. At some point, I realized that I don’t feel any connection to this gender, no feeling like other people have. I also don’t see it as something that influences my personality and I don’t apply to gender norms. I just don’t care about gender. (This btw. also makes it harder for me to understand people whose sense of gender is so strong that they even reject their AGAB, although I accept their feeling, of course.) So how do you “feel” gender?
I’m an old cis/het dude, and while I’ve occasionally fantasized about being a woman, it was entirely out of fascination with something else - not identity. I don’t necessarily ‘feel’ male, but being female is incomprehensible to me.
Compare that with a dear family friend. When they were about 13, they announced that they were nonbinary; and two years later, decided they were transmasculine.
What was their trigger?
While presenting as nonbinary, they naturally got mistaken for either male or female. They realized that being mistaken for male was totally cool, but being mistaken for female hurt terribly. They identified with being male, and being female (their AGAB) felt abhorrent and wrong.
So if you don’t have some part of your brain screaming “NO NO NO!!!” at you, you’re likely an average, 21st century cis person whose ability to access infinite porn has dulled your sexuality a bit.
So don’t worry too much.