Denials are usually prompted by some circumstances, perhaps circumstances that provide some evidence that the denied action actually took place. That may be a confounding factor; among cases where such evidence is present, is there more likely to be a denial when the person is guilty than when the person is innocent? If not, perhaps you shouldn’t take the denial as contributing anything further beyond what you learned from the evidence that prompted the denial.
Denials are usually prompted by some circumstances, perhaps circumstances that provide some evidence that the denied action actually took place. That may be a confounding factor; among cases where such evidence is present, is there more likely to be a denial when the person is guilty than when the person is innocent? If not, perhaps you shouldn’t take the denial as contributing anything further beyond what you learned from the evidence that prompted the denial.