Oswald was a low level INTEL asset, recruited from the time of his service with the Marines. He learned Russian and worked out of Azuki AFB in Japan who worked with U2s.
Oswald was no dummy and no Commie. Like many before him from the Korean war onwards he was recruited by the CIA to infiltrate the USSR and pose as a Marxist, Communist in order to be considered legit.
He renounced his US citizenship, made many “scenes” when acting with US/FBI officials.
He moved to Russia. The USSR monitored him for years knowing he was a spy. Once he married and KGB honeypot (Marina) he suddenly had had enough of the USSR.
He was paid to return to the USA. Once in the USA he had “Handlers” that guided and followed him eventually to Dallas.
He never visited Mexico City - it was a double photographed by the CIA.
He and Marina were handled by De Mohrenschildt and Ruth Paine, (both worked for the CIA). Marina was kept busy with a Lesbian relationship with Ruth (who filmed her escapades).
Ruth got Oswald a job in the TSBD.
Oslwald di not shoot officer Tippet or JFK.
He acted out his role as a Commie very well and once apprehended was pretty darn cool, calm and collect until he realized he was being set up.
Then, as time passed he said he was “...just the Patsy”...why?
Once he said that, Ruby was ordered to eliminate him.
Once Ruby opened up about the plot, he too was eliminated.
Conspiracy, yes.
Oswald shot Tippit. He was seen doing this by a number of people who followed him from the shooting site, to the Texas Theater.