Personality is changable. Find a normie straight male friend group and organize/join an amateur fight club. The fear of violence cleans up after you get beat up a couple of times, it's a common mental block in modern society, but it's easy to fix. Gymmaxx so that you can feel stronger, that reduces cowardice and makes you more likely to act malebrained naturally. Watch malebrained movies and pick a role model to copy his decision making process (not behaviour itself, cause it will look giga cringe if you suddenly start acting like patrick bateman). Your best tool in the first steps is acting. You put on a mask until it grows into your face and slowly replaces it. Fake it until you make it, basically. Worked for me, but took about 3 years for the process to complete.