This assumes you are still making a decent wage/salary and is never really accounted for in financial advice in general. The bottom line is that wages are the common denominator, assuming you're even halfway smart with your spending/lifestyle.
If you make <$20 an hour, you're pretty much fvcked even if you split the rent with 4 other people and sell your car. Even $20/hr+ isn't shvt in 2022, you need to be making at least $50-60k /yr to be able to save any substantial amount of money and build wealth (assuming you are living below your means).