Most of us on Lemmy are nerds in many ways, it’s part of why we’re on something like Lemmy as opposed to the more narcissistic social media platforms.
However many of us are cool sociable people, or extremely capable in something that others look up to us for, we just have nerdy hobbies or careers or tendencies, what are those traits or abilities that make others enjoy being around us or look up to us or would otherwise be described as “cool”?
Confident but not cocky, try and make someone’s day better with laughter or a compliment. Ask questions that confirm you are really interested. Listen intently. Have a basic set of clothes that combine well into something about 25% the way of 'well dressed", whatever that may be in your style.