When doing user research, why not look at the design from the point of view of different users?

I need help making a data flow diagram for the following use cases:  Intro/Homepage: This first case will be used to give the user the first look at what the whole project is about. They see the beginning stage and interact with all the links to the movies, characters, and descriptions.  Browse MCU Shows: This case will be for the customers and users to be able to navigate through the feature and see what they are specifically. They can use it to find which exact Marvel Cinematic Universe movie/show they wish to watch and see what character they like.  View MCU Movie Details: This case will be for users to get more information about specific Marvel movies/shows. It will give more details like the cast, the run time, the review score, the characters involved and etc.

When you create a new job category – Select one: a. all employees are assigned to the new category initially b. no employees are assigned to new category initially c. all employees in this category are not salespersons initially d. you cannot assign an employee from another category to the new category at the same time.

Consider the situation of a design team that is striving to discover whether or not their suggested prototype design would improve user performance and pleasure. (See Figure 1)Create an appropriate evaluation system for the design team to use in a few short sentences and offer it to them for their consideration.In your discussion, please explain how you plan to use the framework to aid you in the review process. Discussion: