Paraphrasing some parts of this video for what I think may be key takeaways, or a sort of too long; didn't watch:
Understand or recognize what's desirable about your masculinity or yourself through the lens of those you're interested in being with, so if you're straight, listen to & pay attention to what straight women are drawn to in straight men. Don't listen as much to straight men about what they view as appealing about being men or masculinity and what they think straight women are into, they're not straight women, their understanding is limited at best.
Learn how to feel comfortable with yourself, and seek to improve yourself through regular means through hobbies and learning skills that you're passionate about & can relate to others with, maybe even meeting others in the process that you later find yourself in a relationship with.