This is not available out of the box, would need a plugin to remove certain users when loading /users page.
Can't change user avatar
I have stupid question, but on my instance I can't find any option to change user avater themesalve.
In admin panel I can do this.
Of course I have enabled "Allow users to upload profile images"
but on "Edit profile" panel I only have "Change username", "Change email", and "Change Password"