That’s why you see all the suppositions as opposed to evidence.
Sorry, but you must not have done much reading if you think there’s no evidence of more than one shooter
There is no evidence of another shooter! Saying Oswald's scope was bad, he couldn't get off that many shots in the necessary time, or the backyard photos were fake are not evidence of another shooter. There are no shell casings, no photos, no fingerprints or confessions of any paid assassin. There are rumor, innuendo, coincidences, and murky photos that show nothing.
And conspiracy buffs always ignore John Connelly, who's wounds CLEARLY show a shooter from the rear.