Here it is a bit closer:
I have recommended to quite a few of my clients the benefit of using both an antivirus program and a personal firewall. The products I have used for around 20yrs now are from ESET. I currently use Smart Security.
It simply runs in the background and checks things for you. I frequently use mxtoolbox.com to check out information relating to websites. I went to one just now and in my haste typed in mextoolbox.com (there is an e in there that should not be in there). A sharp hacker has taken out that domain name and used it to hide a virus. It was detected as I opened the webpage.
If you just use a free AV product, this would not have been detected. Many of the charities I work with have no AV, or free AV products. I consider myself to be very careful on the web. But even I can make a mistake.
I recommend Eset Smart Security to protect your Windows computer. You can find out about here: https://www.eset.com/uk/home/smart-security/
As a charity you can get it heavily discounted, and if you buy more than one or multiple licenses then it is even lower cost.