For a very basic beginner intro, you can start here: https://www.mrmoneymustache.com/2012/01/13/the-shockingly-si... ... In a nutshell, at one extreme (I do not recommend this, you will not succeed if you pursue this type of hyper frugality) if you can save 90% of your income, you'll be able to retire in about 3 years (assuming you start with 0 net worth, no major debts, etc.). All other retirement plans are just variations on speed and relative acceptable frugality.
2. A bunch of places that will be significantly worse in many ways (low paying service jobs, manual labor etc.).
3. The problem probably isn't corporate life in general, it's your specific company. Take a break, then consider moving to a different company.
You mean, if you have the money? Of course. It will be much cheaper than in the US. For example, a ~$500-750k should set you up for life in Eastern Europe. Whereas, in the states, it's probably at least double that amount.
If you don't mind frugality, you could even make do with significantly less than that. But I recommend trying it out first before making this decision - living cheaply can become a drag after a year or two. Not everyone is ok with living in poor/crappy neighborhood, or sweating every small purchase at McDonalds etc.
I quit my last job in state government when I decided that I'd rather die than keep working there. That was July 7, 2005. As things unfolded, I haven't worked since. This was a totally stupid thing to do, but somehow I survived. If I had it all to do over, I would be a whole bunch smarter, but here I am.
I made it on savings to 2011, when I was eligible for Social Security at 62, and three years later at 65 I began drawing on my state pension. Now I'm living in Cuenca, Ecuador, where my monthly spending is under $800, around a third of my income. OK so far.
Mr Money Mustache is a good resource, and there are other similar ones. "Gringo Post" and "Cuenca High Life" are sites with some perspective on the place I happen to be now.
A possible source of more, employment-related info: https://grayshoring.com/