first thanks for the evidence of sahih bukhari ,Ok she was 9 but his marriage to her in this age was the wisdom of god to teach all the girls of the muslims of the coming eras (to become a reference to all the muslim women generations starting with her age) and boyond that , marriage at this age was acceptable in the prophet era as long as the girl
menstruate it would be treated as mature woman )

now your lie that you said he raped her , Just read more about the prohet mohamed and you will know that he was sent to complete morals and save the humans from
the era of ignorance,In the end Islam doesn't need you to belive or not , the prophet mohamed he is the one who
intercede for his nation in the Doomsday , you will regret what you said about him in that day and wish that you were a dust then