How much would you need to work if you bought a small-ish house, lived on a very strict budget, and generally kept expenditure to a minimum? There are places in the US where you can buy a house on a bit of land for just over $100k (ex: https://www.zillow.com/homedetails/904-Grant-St-Tupelo-MS-38...). What could you do with half an acre of land, a paid off house, and minimal day-to-day obligations? Imagine: work for an hour or two per day so that you have money to buy food, pay power/electric, etc., then idk... read? write that book you've always thought about writing? get in shape? start a garden? go fishing? There are so many possibilities.
I recognize that moving across the country, having the money to pay off a $120k house, etc. is an enormous privilege for some people and I'm certainly not asserting that it's an opportunity that anyone could take advantage of. Only pointing out that the bar for FU money might be lower than you might think.