Kaspersky Free has been working awesomely ....for me....
Poll 30-40 experts, you are quite likely to have 10 very good products listed 2-4 times each...
(testing I've seen of and AVG/Avast products showed both to be fairly competent, but, I'd certainly not pay for either...)
I used Microsoft's included Defender (now relabeled/rebadged as simply MS Security?) with no issues for more than a year, but, as I don't download crap or junk and mysterious sources' patches, video players, or 'free movies', I'd probably have no issues running nothing.
Put a pop-up blocker like U-BLock Origin or Defender extension on your browser as well...