I think it’s very normal. It also depends on what you do for a living. I have fast pace, social , loud, very active, not a boring moment, something happens every minute of my work day kind of job. No way I can be active the entire weekend. In fact I need quiet, no noise for a bit. I like to do one social thing on the weekend. And stay home the other day. There is also a lot of housework to get done and I am a clean freak, which doesn’t help the case. I also have hobbies. So no way I can socialize for two days. So you are normal!