Symbols don’t have an impact until they’ve been given a meaning.

So don’t count on a logo to hang your hat on. When you are starting out, the best logo means absolutely nothing to people.
You have to create impact with direct visual communication such as photos or illustrations of what you are trying to sell, its features or benefits (happy customers). A logo can have some impact even before it has any meaning, but it isn’t going to have much.

Over time, your logo can come to mean something.

Words do have meaning and the right “button” in a headline or your Google listing can make all the difference in the world.
It’s still a big plus to have graphic elements that stop people so they DO read your headline.