Its beyond minid-boggling how you spend 1300 a month on rent and gym and other stuff. Which neighbourhood are you in? How many roommates? I've usually paid around 3-4K for a studio...
For instance, here's $3500 for a 4 bedroom/1.5 bath that's on a quiet street but near a lout one https://streeteasy.com/building/171-east-8-street-brooklyn/3...
https://www.zillow.com/homedetails/216-E-93rd-St-2L-Brooklyn...
Obviously not the most ideal circumstances, but it can be done.