Wrong on practically everything. Rev 11:8 tells you what the “great city” of Rev 17:18 is, it’s the “city wherein their Lord was crucified”. That can only be Jerusalem.
Rev 11:8 does speak of Jerusalem but that’s not what they speak of in 17:18 The whore of Babylon is Rome. Who fornicates with all the kings? RC Church. City on 7 hills.
Check out these verses in Gill, Pulpit, Barnes, Cambridge, and I'm sure many other commentaries to read for yourself.
Having said all that, it is very possible that when the false prophet and the Antichrist set up their new world religion, his throne could be in a new temple built in Jerusalem. We will have to wait and see for that. It is strange that the new pope hates capitalism, loves socialism, and believes in global warming. Europe is already warming up to this "new" thinking. I fail to see all that in Scripture, but you never know what the new Bible will say. One more reference to the RC church in Revelation is, Rev 2:18->. Many if not most believe Thyatira refers to the RC's. The name Thyatira was the name of the daughter of Nimrod of Babylon. It speaks of committing adultery with her and we know that is idol worship. You can't pray to statues and worship finger bones and hanks of hair and remain on God's good side. When Scripture states Israel was an adulterous nation, God was remarking of her idol worship. He is looking to "marry" the church and wants a virgin dressed in white robes. It's the same with Christians, we need to only worship God and not others, such as Mary and a few dozen other people that aren't any more than any other saint in heaven. Certainly not a statue or medal of any said person should be prayed to. The Bible is clear that there is only one Mediator and that would be Jesus.