I understand your frustration and concern. If Microsoft's safety tool detected a corrupted file intermittently, it might be worth running additional scans, such as Windows Security or the free Malwarebytes. Regarding suggestions for Windows 11 virus protection, I'm sorry, I do not have a direct contact with Microsoft. I recommend sending feedback to Microsoft using the Feedback Hub app. https://support.microsoft.com/en-us/windows/sen...
Thank you.