Been in that state a lot. That’s classic depression. Evo-psych has some stupid ideas but their read on depression is solid. That urge to withdraw from society is a human urge. The urge is designed to lead to either, you leaving your band of primates to seek another, or your fellow group members coming and finding you to show how much you matter to them. Modern life doesn’t let that happen though. So many of our relationships are digital or just shallow so no one can tell you’re leaving, and changing your group in a real way is hard. If you want to feel betterment you have to use your rational brain to seek out what your body is instinctively reaching for. Pick something that you have always cared about, and go to a real life event centered on that thing. This can be almost anything, as long as there are real people, really sharing a physical space. Talk to the people about that thing. Don’t do it just to tick it off the list, you have to pay attention to what they are saying because you need to be able to articulate their ideas and then respond to them.