You can check out this list of some good recommended free antivirus software for Windows. (thewindowsclub.com)
In this post, we will see how to hide, disable or remove the Windows Defender icon from the System Tray when you have enabled Windows Defender — as well in a situation, where the Windows Defender Notification Icon still shows, even when you have a 3rd - party antivirus software installed. (thewindowsclub.com)
AV - TEST conducts regular evaluations of antivirus software on a variety of operating systems. (tomsguide.com)