If it is the case that you share a computer with other people, you can delete accounts that are no longer needed to clean up some space.
Here is how to do it.
- Open Settings.
- Click Accounts.
- Click Other users.
- Select the account to delete.
- Click on Remove.
- Click on the Delete account and data button.
Once done, Windows 11 will remove the user and their data and free up space.
Repeat the process for every account and data you want to remove.
Read more on the blog.