I have already tried to study and understand it and I can't. Not the way you see it. I see the figurative written within scripture, I always have, but I also see the literal being worked out at the same time.
Satan is real, but the 1000 years is not, you say. I guess you believe there will be a real Gog and Magog war? Or not?
I can see where you would think the camp of the saints and the beloved city is figurative and I agree that it is in the sense that it's talking about the body of Christ as a whole but to visualize how a war like that would come about, I would think it would also have a focal point to happen.
I have showed videos of people in Israel starting to take a big interest in the things of the Lord. Big groups are going to planned assemblies to hear about the Good News. This could cause all sorts of issues when enough people show signs of coming to the true Messiah, that clash with orthodox jews that want their temple, so their messiah will lead them. Their messiah being the false one. So I believe it can mean both literal and figurative at the same time, and a real war will break out.
But yes, there have been many anti-christs through out history as scripture states. I guess we can wonder if Satan himself possessed them each time or not. I don't know. Anyone can be 'in the spirit of anti-christ' at any moment, and not have Satan actually in them. Peter was apparently, and Jesus pointed it out. Yet, scripture also tells us that Satan entered Judas. Literally or not? It's a lot to think about.