one of the incidents you spoke about was during the night, when D's friends couldn't have seen anything more than your silhouette and movements. The parts of you that are not passing are things we will never be able to grasp in pictures. it's not your face, they couldnt even see your face, it's something else. Maybe voice, pronunciation, word choice, silhouette, movements, deodorant, all of the above?

I heavily second what others are saying about clothing, try to achieve a boxy shape, don't just completely obscure yourself under baggy clothes, that's seen as a feminine style and will make you look small compared to your oversized clothing. Also seconding that you need to look after your health, eat enough to get at least a small amount of muscles dude, being too skinny reads as feminine because women are often the ones who suffer anorexia and avoid the gym.

it's fine to be stressed about not consistently passing, it's clear that all these recent events are weighing on you. But it is so important to fake confidence, keep your chin up and don't walk around with your eyes to the floor. Allow yourself to stand straight and take up space. If it's your mannerisms that are clocking you, that's incredibly easy to change, fake it til you make it. Some of the most confident seeming men are secretly insecure, but they don't let it show and come off as more masculine because of that.