How do you talk to women because I’m genuinely at a loss for words?

At college, did I know I was bright? I had no idea. None. I had been told I was very stupid all my life. In fact, my good grades confused me. I needed extra support both educationally and psychologically at that time, I didn't get it.
I’ve been feeling really lonely lately. I don’t really have anyone to talk to, and my daily routine just feels dull and repetitive. It’s like nothing exciting is happening, and it gets to me sometimes. What should I do?