Sometimes I ponder why the most powerful modern nation doesn’t seem to rate being mentioned in Bible prophey.
It *may* be there. Dunno.
You are not alone. Beyond some of the more obvious, top-level prophecy, the absolute (not necessarily relative) timing of events is deliberately vague, as is the identity of the players.
The best I can tell you is to keep reading and praying, and keep trying to figure it out.