Those events and times inspired those books, but they didn't actually happen in those countries.

There is a core message about the nature of not just ingsoc but the other governments of the world as well, and their relationship with each that gets left out when talking about 1984. The overbearing surveillance capital state is all people think about, that's part of it, but why that state exists, the motivations of it's leadership, the sheer and terrifying brilliance of the architecture of their government. in many ways, I'm glad the leaders of major countries and political movements don't grasp 1984 well (or at all).

But I agree that in 1948, Orwell's frustration and experience was not just that there was a world war, but that it was the second one in his life time. War-time mentality does approximate the levels of repression he mentions in the book, but in any country, it doesn't quite get there. But it could!

That's the scary part, things like "facecrime" weren't possible in 1984, now not only is it possible, it can be done without humans being involved too much. We have all the surveillance, more than he could have even imagined. But not only that, we have the means to analyze all the surveillance data in real time and do something about it. The capability to implement a world much worse than the one in 1984 exists. The villains of our times and the people they rule over just haven't managed to negotiate the imagination and sophistication of a strategy to abuse it yet.

EDIT: Coincidentally, I just stumbled on this timely piece: https://www.bbc.com/news/articles/c62rexy9y3no

This is what I mean. just random people are doing the spying parts already. [SPOILER] a very similar scene is in 1984, except with the government behind the cams.