According to Rev 6, the Lord Jesus will protect olive and grape production. Where I live lots of us in the countryside keep some kind of grape vine, ours being muscadines. They are great survivors of drought, needing no help. There's still a significant supply of olive trees around the world, the nearest to us in California, but those are being replaced with almonds. I think that's a huge mistake due to the scarcity of water there. Having access to those two trees will go a long way toward survival of 2/3 of earth's population upon the arrival of Jesus on his white horse.
The war to come is now certain to destroy satellites and all public communications, including the internet. Once that war breaks out world-wide, an electronic banking system will be rendered impossible. E-bombs can accomplish the coming electronic armageddon, frying computers, cell phones, even pacemakers.
In Rev 6 it ought to be pointed out that though food will become scarce, obviously it will be available for billions of people to live on. Right now people can purchase food for part of a day's wages, but in the tribulation a day's food for one person will cost a whole day's wages. Anyone with gold or silver coins will find food to buy without a microchip that has been fried in the war. Storing up gold and silver is becoming quite popular, while it appears to me people are tired of storing up survival food. I did that for decades, most of it expiring or going rancid before rotating it.
When all that hits the world, governments will proceed to seize stored food, water, coins/gold dust/precious stones, and whatever else ("for the common good") is needed to maintain a military used to do the seizing, even though that's unconstitutional in the USA.
Many people will starve to death before the Antichrist starts his economic system, and many more will decline to take part to get food.
In the end surviving gentile nations will serve the survivors of Israel, according to Isaiah. Under Jesus' rule the world will continue on for his thousand year reign.
I agree it would be better to escape it all by rapture, which I believe is for Christians still living righteously, not part of the coming apostasy. For the disciples of Christ there are also assurances of provision by faith in God, listening and obeying carefully to the Spirit like Elijah did, and many more through ages of perils.