No, you don’t need nails, but having them is highly recommended. A well-shaped and buffed nail can produce a much more controlled, clearer, and louder sound. Having nails also allows guitarists to achieve more differentiated sounds on the guitar. However, it’s very important to remember that nails that aren’t properly shaped and buffed might hinder playing the guitar. Make sure to always have with you a nail file and a buffer or special sandpaper to take care of your nails.