Most people do not contribute to society. They go out to make money so they can buy stuff for themselves and for their own survival, and they pay taxes that mostly gets used in stupid and/or nefarious ways. Try not to put society on a pedestal if you can help it. The things that matter are our everyday interactions with our fellow humans, being kind and compassionate and all the small but meaningful things we do for each other throughout our lives. If you struggle to hold down a job, that ultimately makes things very difficult for you, not society. There is no need to feel guilty or ashamed.