Although the images that you use on your web pages can tell a story as much as the words do, they don't help with your Google rankings.
This has been confirmed by Google's John Mu:
"There is no automatic effect from adding images. ๐ John ๐ (@JohnMu)" May 2, 2021
"I understand that nobody likes looking at blog posts and feeling like theyโre reading an essay."
"I also appreciate that a picture paints a thousand words."
"Images can also help social sharing and cut through any language barriers, so I appreciate their importance."
"However, you don't need them to rank on Google."