There are other ways to cut expenses too. I’ll bet a lot of people (not all, but a lot of them, maybe even a majority) are paying for things they don’t need when they’re living paycheck to paycheck. Things like Spotify, Netflix, fast food, car washes, probably even car payments on a car that is beyond their means or at the least way more car than they need.
Every friend of mine I’ve helped get to a financially stable and responsible point in their life could do it without having to increase their income. Obviously an increase in income makes it a lot easier to do this, but if you don’t have the behaviors down, then you’re just going to creep your lifestyle when you make more money.