Do not panic. Do not engage with the poster. Immediately gather evidence (screenshots, URLs). Contact the platform (Telegram, Twitter) to request removal. Then, file a formal complaint with Turkish law enforcement (Siber Suçlar). An attorney can guide you through the process under TCK Article 134.
When engaging with online forums, especially those with adult-oriented content, it's essential to prioritize safety and take necessary precautions: Amator Turk Resimler Adult Forum