I think in some ways you are blessed. If you lived in the United States, you would need an income of roughly $2000/mo to struggle through life. You really need at least $3000 per month to have some room to breathe, financially.
But, what if you earn $2000/mo and stay where you are? Not permanently, of course. Because of your low cost of living, it would be easier to grow to $3000/mo than it would be in a more costly country. If you move too early, you'd be spending more of your income to survive rather than grow your earnings.
One thing I love about immigrants is that they don't have the same mental blocks as native citizens. Immigrants see opportunity where citizens only see marginal gains. As a first generation immigrant, it would be more likely for you to be successful than your children. Particularly if you have some way of earning money that doesn't require a large time commitment.
It's one thing getting here. It's quite another to earn a living. My family came from Mexico. It was only through farm work and factory work that they survived and were able to provide us the opportunity to finish school. The rest was up to us, which wasn't easy either.
I don't mean to discourage you. In the long run, you would be better off emigrating. However, you should have an extra income buffer before you leave. If it takes an extra year or two, it may well be worth it. Your lower cost of living means you can reinvest more than what you could reinvest where the cost of living is higher.