The question often arises, is it worthwhile to pay for antivirus software for your computer, or use a free version, or, if on a PC, just use the built-in free Windows Defender program? The following article has, I thought, a very good discussion of this question: Is Antivirus Software Worth Paying For? – Review Geek

As for myself, I've used the free version of Avast AV for years when on a computer (I don't use an AV program on my iPad or iPhone), and it seems to offer decent virus protection, but there are fairly frequent pop ups wanting me to upgrade to the paid version, which is understandable -- these companies need income to survive. So, the 'price' I pay is a minor aggravation from pop ups. A point to consider if you're on a PC -- Windows Defender only works on the Edge Browser, so if you use another browser, Windows Defender won't protect you.

Jim Hamm