It's totally normal to feel this way about making connections. A lot of people worry that technology is making it harder for people to form intimate connections but every person is different.
To be honest, I'm not the best at talking to people or making friends and such but some good topics to talk about, once suggested by a counselor, include things like movies, songs/bands, video games, sports or even animals or colours, things like that.
I don't really understand chemistry, but sometimes it can take a few times before you meet someone you want to stay with. It's never a waste of time for you or them to experiment and reach out to other people.