Just got fired from my internship. Need help with what should I do now

I’m a fresher, graduated just a month ago. I joined a startup through campus placement as an intern. The company work culture was very hectic with 14 hour shifts from morning 9 to night 11, 6 days a week. Worked there for 3 months. I tried my best to make sure I get converted to full time but I guess my efforts weren’t enough. Feeling very demotivated, and don’t know what to do now. What are some job portals that can be used to get hired as a fresher? Or what should be my path now? I would appreciate any help I can get now.