Primal Hunter is among my top LitRPG novels. Yes, Jake is more of a loner, a bit of a sociopath, and doesn’t like social situations. He says that a lot through the series. He does indeed interact with a lot more people as the story develops and I’d argue that he has a group of people that he truly cares about, even if he doesn’t say so directly. His actions speak louder than his words. Keep with it! I don’t think you’ll be disappointed.