Having an online business worked for me because I am an introvert. I know that maybe I would have even made more progress if I do more networking than I do presently. Bear in mind that I barely do any networking for my business at all.
Hobbies can be anything, once you find it enjoyable and it makes you happy (and you are not hurting anybody). It could be a passive or active form of leisure. There is no accounting for taste, some people’s hobby is going to the gym, my own idea of hell.
I have no strong needs to belong to any group, infact I love my individual nature, I don’t do groups. I like my freedom, my ability to do what I like when I like without seeking permission from anyone, or fear of upsetting anyone.