You’re writing ebooks. You need COVERS. Kindle ebook covers are easy to buy, or you can create your own.
I usually create my own. If I’m ghostwriting ebooks for a client I always write a series of ebooks (because series sell better). I commission a designer to create a basic cover, with variations. Once I have those, it’s easy for me to revise each cover when I upload it to Amazon.
Tip: write in series. You’ll see more ebooks.