1. You get first dates from dating apps: you are attractive, at least htn or chadlite (6-7).
2. You cant progress beyond that, likely because women are turned off by how you act, talk, etc. Add in an extremely niche hobby that attracts obsessive personalities, social rejects, and other weirdos and people in denial of there brain issues, I would deduce that you may be autistic, or act like it (SAD, etc).
3. I don't know how to fix it... if it can be done it will have to be you. (Note: the following advice is way easier if your not autistic) You are attractive enough, so you likely need more socialization, and FAST. Maybe put running on the backburner for a few months, hang out with nonrunner friends, join a frat. Girls like the idea of you but not the reality. you need way more exposure to them. Go do HHH, anything man, just talk more, dress like a tiktok prettyboy zoomer, lift a bit (it WILL help your MD ability).
4. You have 80% of it down (looks) now go chase the other 20!