How to display buttons - next / previous author. On the author's page

I want to be able to list authors on the site inside their personal pages. But I do not understand what request to create, how to display the previous user or the next one relative to the current author page.

As I see it.

On the author's page, there is a button (previous user) and a button (next user)

I am not good at coding, but I will be glad to hear advice in which I can look for a solution.