Hi,@Sergio Londono
Thanks for posting your question in the Microsoft Q&A forum.
Based on your description, I suggest you choose Report Message. The Report Message add-in provides the option to report both spam and phishing messages. The Report Phishing add-in provides the option to report phishing messages only.
On how to enable Microsoft Report Message or Report Phishing add-on, you can refer to this link: Enable the Report Message or the Report Phishing add-ins - Microsoft Defender for Office 365 | Microsoft Learn
If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.