UI/UX User Story example

On a current project, we're trying to write UI/UX into the user story and we currently have this:

Story: "focus on design for the beginner user

Acceptance criteria:

• Intuitive navigation
• Uncluttered and appealing user interface

I'm being asked to help refine these user stories that are specific to the UI, but I have no experience with this type of story. Typically, our stories don't contain this type of language and will instead refer to the thing we're supposed to design ("search bar for users to quickly find information", etc.)

Does anyone have any thoughts/experience on UI/UX user stories like this?