I understand your situation - I stayed in for years because I couldn't imagine losing my entire social life. I think the best thing for your family is to keep away from the hall and the people there and focus on making a new life for yourself. Once your oldest starts school, volunteer at his school. We signed our older boys up for Boy Scouts because they were interested and already knew a couple of the boys in the troop who live near us. Keep trying with the classes - many people are socially awkward and have a hard time making new friends, even when you initiate the process.
I'm sending you a PM