I have worried about my D19 in the same aspect. Her freshman year of HS was great. Tons of friends or at least people she thought were friends. There was a major falling out sophomore year with some people. D19 hasn’t seem to recovered. Her closest friend isn’t always on the same schedule due to ECs and work for both of them. D19 doesn’t seem to do much with other people. She now works a lot and keeps busy. We are hoping college will change things. I am not holding my breath.
I attribute it to all the opportunities we have to entertain ourselves without leaving the house or dorm room. I can remember back in HS we had one TV with cable and Dad made all the viewing choices. So I could either sit at home and watch TV with mom and dad or get out of the house and do something. Needless to say we went out plenty and most times without a plan. Just whoever could get a car.