Some people expose themselves trying too hard to expose you.

People who set out to discredit someone tend to overextend. The effort requires them to claim more than they know, keep at it past the point of proportion, and reveal motives that were better hidden, and observers notice all of it. Often the most effective response is to be accurate, brief, and patient. The overreach does the work.

If someone is working against you, focus on being straightforwardly correct rather than on countering every point. Let the disproportion be visible. Fighting at their scale removes the contrast that was your best asset.