Messed up my career

I recently left a good company to join a startup. Now after joining I come to know they have working Saturdays and in 2 weeks I'm already burnt out. There is literally no process to do things and in my first feature their psycho tech lead had mood swings and asked me to refractor the code 3 times based on his mood swings. The signs are really bad and I don't want to stay here anymore. Is the tech hiring picking up? I'm prepared to sit for a couple of months without a job as well tbh. But if the market is too bad then that may be a worse step than staying here. Regretting the switch.