You’ll have a lower chance to accidentally download a virus and the web is less annoying.
uBlock Origin is the go-to. For Firefox, Firefox on Android and Chrome
Most of you probably already have an adblocker, but an astonishingly large amount of people don’t have one. Try it, you will never go without.
What else do you think is absolutely necessary to browse the web safely?
My family has been blocking ad since with days of Windows 98 SE. Right now we have UBO, Https everywhere, privacy badger on Firefox from our linux desktops/laptops to our smartphones.
HTTPS Everywhere is being deprecated since Firefox now has an “HTTPS only mode” which works really well :)