[kikokikokiko]

Just sign to a gym. Not the pumping iron ones. Sign up to a martial arts gym, a dance studio, an art school. Anything that is more of a social activity, and that YOU LIKE. If you find a group of people that share the same niche interest that you genuinely have, you make friends. My personal advice to the engineer type of guys, is go to a BJJ gym if you want to practice something that is extremely challenging both physically and intellectually. The number of techniques is virtually infinite, and you can become good by simply memorizing more tech than your average jock. So, to make male friends (but not only that) go to a BJJ gym. If you want to meet girls, go to a dance studio. Both skills will be really valuable in terms of physical and mental health throughout your life, apart from the friends you'll make.