It’s not easy by any stretch.
Earning median wage most of that goes towards rent. There's nothing left to save. Move further away and you lose big on earnings.
If you are in your teens or 20's in a median wage income, then I advise considering vanlife grinding towards FIRE. I spent so much time in libraries or labs at that stage of my life that in hindsight, I should have dismissed the stigma of "homelessness" and adopted vanlife, scraped enough together for a duplex down payment, rent both sides out initially until one side is paid off, and then settle in that side should I want out of vanlife at that point.