It looks decent...
Yeah, it is almost like an anthology because each episode shows different characters experiencing the collapse in different manners although a few characters appear in more than 1 episode. For me, it was very realistic and some parts were intense. It was a unique and enjoyable show for sure.
The collapse wouldn't be that different based on the reason, would it?
It would be the same but I would still have preferred some info about the reasons behind it.
I rarely watch non-scifi non-fantasy stuff
Have you checked out an Apple TV series named "Calls"? It was one of the most unique productions I have seen this year and it shows a very different type of apocalypse in a very special way. It has suspenseful scifi even though all we see on the screen are animated waves representing the emotions of the people talking during the calls. It was cool.
I've checked Calls on IMDb just now. It looks like a show for some artificial intelligence, not for me. But I know someone who might love this uncommon format.
Nope, it isn't about AI. It is about events that might seem paranormal but have an apocalyptic scifi background unrelated to AI. Just in case, this is the imdb page https://www.imdb.com/title/tt9327706/ and trailer :P