Start with the part that is verifiable
Separate the event you can describe from the motive or reaction you are guessing. For a message about how to correct a rumor about your health, use this factual base: state the claim, where it appeared, what can be verified, and who actually needs the correction.
Make one answerable request
Give the recipient one concrete question or next step instead of several emotional jobs at once. Ask for a correction, removal, or direct conversation and keep an accurate written record. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Leave the recipient in control
Do not publish private evidence, speculate about motive, or recruit an audience to punish someone. Use school, workplace, platform, legal, or police channels for threats, defamation risk, intimate material, or impersonation. A clear message remains useful even when the answer is no or no answer arrives.