Always tell the truth. That way, you don’t have to remember what you said
A truthful account of events does not need any scheming, planning or coordinating to make the details logical and consistent. It does not care for unexpected events, unknown circumstances and unexpected witnesses getting in the way because they will all automatically validate each other.
Truth has a beauty and simplicity which does not require anybody to make improbable assumptions, illogical explanations and unlikely postulations of human behaviour to fit the narrative.
Conspirators can try to cover up the truth with lies, deceit and fabrications but the truth will eventually come out like water dribbling out of a leaky container.
Lies may need more lies to cover up the holes to make the story appear logical and consistent but more lies may punch more holes in the framework until the whole thing collapses and the deception is exposed.