Choosing between images or typography for your book cover depends on the genre of your book and your target audience.
If you are writing a non-fiction book, it might be better to focus on typography. A clean, bold font can convey the book's message and make it stand out on shelves or online. However, if you are writing a fiction book, a well-crafted image can be more effective in conveying the mood, tone, and genre of your book.
When deciding on an image, it's crucial to ensure that it represents your book accurately, and it's eye-catching enough to grab your potential readers' attention. You can consider working with a cover designer who can help you create a professional and visually appealing cover that reflects your book's content and genre.
In summary, the decision between images and typography depends on the type of book you're publishing and your target audience. If you're unsure, you can always do some research on successful books in your genre and analyze how they've chosen to create their covers.