If you're still following this thread, please consider this...
I had my whole family switch to Waterfox for the same reasons you used it. It was a great story that it was created by a 16-year-old and protected users' privacy. Only that has changed: it Alex sold out to a company that is in the business of data collection. Please read more here:
(Search for "Waterfox".)
Now we use Firefox. Suggested privacy settings are at https://restoreprivacy.com/firefox-privacy/.
Another privacy expert, Michael Bazzell, also recommends Firefox as the most secure browser (hxxp://inteltechniques.com).
I get additional privacy using uBlock Origin and Disconnect extensions (recommended by Bazzell).
I have used Eset products, starting aith NOD32 antivirus, since 2005. I've been happy with the products and with their support.