Hey once again rt,
I spend a lot of time alone, especially when I'm a home since, as I mentioned earlier, my parents work a lot and we don't get much time together. It is true that when I'm alone, I usually feel unsupported/uncared for, like you said but when I'm with friends I feel the opposite. So yeah, I think you're on the right track, I hope this helps you understand a little better.
I haven't really spoken about this to other people, I've brought it up very briefly with one of my closer friends but really not in any extesive detail cause I didn't want to bother them. I'll bring it up with my physiologist when I see them next, I haven't had the chance to talk to them about it since I haven't seen them in a few months. I haven't brought it up with my parents either cause they never really seem to understand my problems.