In this article, we'll explain how to delete user profiles from your PlayStation 4 to free up space for games and other multimedia content you enjoy.
PS4: How to Delete User Accounts (REMOVE EX GF or BF) (2020 Tutorial)
Removing users from your PlayStation 4 will free up space for your content, but it's best to contact the person who created the account before proceeding so you don't delete any of that person's important information.
Sign into a PlayStation account on your PS4 and open the Settings option at the top of the screen.
Scroll down and select the Login Settings option.