Bored Stay At Home Mom

I get my 4 kids & husband off to school and then I’m bored. I spend my day cleaning the house but then the next day have nothing to do. I don’t have any friends available to call (the work) and if I’m not working out or cleaning I feel useless. I end up online shopping and then feeling guilty later. I need a life/purpose. When my kids were little I was insanely busy but they are now in school.