Great content is more than words. You also need great visuals. None of us have the budget to create custom visuals for all of our content. The good news is there are many royalty-free image sites that you can mine for the right images to pair with your great words.
Caution: many of these sites also promote paid options. You may decide you want to pay for an image, but make sure you are intentional about selecting a paid image over a free image!