Discussing scenarios for future of humanity.
Personal opinion: there will be less resources to uphold the standard of life, prices will skyrocket, wars will break out, people will die, civilizations will collapse, we will live as savages or farmers, in best option world will be rebuild with technologies but not with so much population, and consumption will be regulated. In worst case world would be back to medieval or ancient level of civilization, with humanity shrinking to the levels of the world before industrial revolution.
Learn medieval technology, don’t count on current level of technology, as resources upholding standard of life will get depleted. Try to make out much from whats left.
If you are still young, learn how to survive without internet, without car, without electric energy, without shops. Prepare for the worst, you may be the one who will survive.