History reveals the great city of Babylon was conquered in one night, without resistance, in 539 BC by Cyrus the Great. Revelation 14:8 reads:
14:8 And there followed another Angel, saying, Babylon is fallen, is fallen, that great citie, because she made all nations drink of the wine of the wrath of her fornication.
Ask Jesus to help your unbelief, to show you the Truth and be sincerely looking. He will answer you. He loves you and is real. Anyone telling you otherwise is deceived.
Read the Bible for yourself. Don't listen to naysayers. It is a supernatural book. Just read, maybe beginning with John or Luke. He will answer sincere seekers who don't demand He come on your terms. He is God. Not us. Be humble.
I pray the Holy Spirit will hover over you and give you true revelation of who He is.
Thank you.