So in Safari, whenever I used to type in a work like "google" and hit enter, it would auto fill the "www." and ".com" to go the site, but it stopped working a couple of days ago Does anyone know how to fix it?
One possibility is that somehow you at some point tried to go to "http://google" instead of http://www.google.com, and as a result, you are pulling that historical URL from autocomplete. If that's the case, then resetting or clearing the history should be sufficient.