It's easy, you just imagine what you think the real world will be like in 10-20 years, use a random word generator to come up with country/faction names, use a random terrain generator to put them on a map with boundaries, and then write a bunch of stories with your thinly-veiled political wokescolding (but only include "controversial" things that the rest of the hivemind agrees with, in the style of Handmaid's Tale).