Anti virus

If it is still there, this will help us or you to find the bits & pieces left...

We need to see what all is running, a report from this will not display any personal info...

Using EtreCheck - Apple Community

EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info.

https://www.etrecheck.com/

Thanks for Old Toad’s etrecheck instructions…

Slow iMac 2017 - Apple Community

Use the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

You need to visit McAfee's web site and download their uninstaller app which should remove the app completely. Antivirus apps are completely unnecessary, will slow down your computer and often cause serious problems.

See Uninstall apps on your Mac - Apple Support

Jacques1945 wrote:

I have accidentally let MacAfee in my Mac mini M2.

How did you arrive at that conclusion? The reason for asking is that installing it requires deliberate action on your part. You need to download it, launch its installer app, bypass macOS's Gatekeeper, and finally provide your Admin credentials to install it. None of that happens by accident.

Might the following be relevant? Stop unwanted Notifications - Apple Community