That depends, do people you dont know see you as male. If not, is it your face, voice? Those are a couple things since everything seems very masculine on you. If you do pass very well, it may just be in your head.
I have a weird opinion on that but have you tried "flipping that switch"? I've noticed when people, even me, notice "guy" or "girl" when they see something and when theyre told or notice otherwise it's like a switch in your mind flips. This phenomenon I've mainly noticed with pets and animals (and pre-T trans people but that's another story) , most animals identify each other by scent but to the human eye,Aside from genitals, Male and female dogs look the same unless you have two side by side for size comparison (Even then age-related or outlier sizes may play a factor.) I've noticed people will have to ask if its a girl or boy and then when they are told will attach a gender to the animal. The same animal can be seen as a guy or girl and people will "flip the switch" in their head to accommodate their view of the animal. In reality, it's rare for animals to attach anything to sex except for, well, sexual purposes.
So with that tangent, my point is you're so used to seeing yourself as female, have you critically looked at yourself as male and "flipped the switch"? You've certainly come a long enough way and have gotten the build, the expression, the hair. Your face is fairly angular from what I can tell. Of course there are the bits only you can see, otherwise, all that's left is your mind. Hopefully you feel comfortable in knowing yourself as male, or seeing that masculinity in yourself on the exterior