Let’s just look at LHO’s actions immediately after the assassination. Leaves the TSB immediately. Leaves Dealy Plaza to catch a bus that would’ve stopped outside the TSB had he waited. When bus doesn’t move, gets off of bus. Gets in taxi. Then has taxi drive him past his boarding house. Changes clothes in boarding house, grabs a handgun. Sneaks into movie theater. Pulls the gun when the cops try to arrest him. Do these uncontested facts sound like the actions of an innocent man?
Nope. Oswald was clearly a big part of the conspiracy.