Looking for life advice

I'm a 27-year-old product manager from a well-regarded university, but my current salary is low, and 90% of it goes towards EMIs.

Despite my efforts, I haven't been able to switch jobs, and my current company isn't offering any raises. I'm also studying for the GMAT, but my practice test scores are stuck below 600.

I'm looking for advice on how to improve my situation.