Come on.
Don't wallow in self-sorry. You are interesting for majority of women for a relationship. I could now recount, why exactly, but it is not about that.
And about "how to fix that". I struggled with similar feelings like a female. And at some point I started to play pretend. I went to dates, thought before, how shy or how talkative or how funny/serious/needy/vampy/helpless/emancipated ....... how interested in this particular guy, I want to come over, and then presented that and looked at results. Worst case: a guy is not interested. I learned a lot this way.
And even without any details of your date, I can tell you one point, that went here not optimal. If you are interested:SHOW IT!. If you don't know how, read-up on that. Interest from a guy, makes him immediately a lot more attractive, than when I think, that he is indifferent.
edit: And you are not bad at dating. At least not worse than an average middle aged guy with your education.
I date a lot of nerds. And most of them have very similar issues like you. So you are pretty average with all that problems.
Last edited by anonla; 01-23-2017 at 12:19 PM.