There is also https://microconf.com/ for a long time.
Your best bet is to connect with individual people, such as myself, or find people in your geographical area. Feel free to drop me an email (contacts details in my profile) if you are interested to talk with a solopreneur who have no interest to sell you anything.
So value from a social perspective but depending on purpose may not get what you want out of it.
maybe FIRE (financial independence, retire early) ones, but those are mostly penny pincher communities with frugality that has no concept of end
bogleheads follow a philosophy but also just like to make money in any compliant way possible