Here's some 20+ year old news you don't want to read: regarding the North Tower, the first one struck, about a dozen witnesses called NYPD to report that an airplane had just struck the North Tower. About half of them told the police it was a smaller aircraft, perhaps a commuter or corporate jet.
Regarding the second strike, the one at the South Tower, that one was recorded by many cameras as of course crowds had gathered. Those videos showed that the airplane had some unusual fairings at the wing-fuselage point, which means it was not a stock 767. That means it was not UA175 even though it had a United paint job.
The conclusion for the critical thinker is that neither AA11 nor UA175 struck the towers that day.
Regarding the Pentagon, the first reporter on the scene stated clearly he could see no aircraft debris there, and that was before the front wall collapsed. Experiments with flight simulators showed that the "official maneuver" was impossible in a transport category aircraft.
I hope you're not confused by the aeronautical terms I've used here.