Hey there

Going back to school will not be a good idea at all and since you have done graduation so you have a degree with you and you can now apply for various jobs of your field and many government jobs. UPSC civil services is an exam which do not care about your past and once you clear it you will be having an administrative officer. Bank PO is another option. If you want to study further you can do so you can go for JRF and study further to do research and become a professor. These are some of the ways by which you can shape your career again. Always think positively and work really hard.

Good luck