The right antivirus? Easy, the one that you keep updated and fully understand how to use. There are many great free and paid options out there, and only you will know which one you prefer. Everyone is going to give you a different opinion on which AV is the best, and they are usually very territorial on protecting & recommending their AV of choice.
But in reality, the best antivirus is that thing that interacts with your mouse finger and eyes...........Your brain! Just a little common sense when it comes to blindly clicking on links, or blindly opening attachments or carelessly installing the latest cool questionable software will go a long way to never even having to use your AV.