Got this a while ago
It exists and still receiving updates daily, Windows Defender however, that's on older computers and very outdated. MSE is the same as Windows 10's Windows Defender Here's a quote "Windows Defender in Windows 10 and Windows 8.1 is built into Windows and ready to work as soon as you turn your PC on. Microsoft Security Essentials works on Windows 7 and Windows Vista. You can download it from the Microsoft Security Essentials website. Before the release of Windows 8, Windows Defender was a separate tool for antispyware."
Google offers 25GB and Outlook 5GB for free, besides 25GB isn't enough to store most things
https://www.ebay.co.uk/itm/MCAFEE-ANTIVIRUS-PLUS-2020-TEN-DEVICES-1-YEAR-PC-ANDROID-IOS-IPHONE/224062614935?epid=17013698320&hash=item342b2c2d97:g:GeEAAOSwdoFbe0PL Probably a better bet if you trust mcafee
Tbh I doubt I'm even gonna use this I might just download it and run a scan and if it doesn't pick up much I'll delete it again