I really wish we knew more about that 5 year period. I mean, losing 50% of the population like that is potentially nation-breaking. We know from F&WS that there was a lot of people moving around all over the world to keep things limping along. I'm betting some nations just collapsed or fractured. We know Wakanda survived and seems to be doing ok now...but those first couple years would have been hard everywhere.
I think it would be cool if they did like a Disney+ series that was kind of set up like World War Z (the book, not the movie) telling these kind of anecdotes of life after the Snap.