Make Image private on copy paste image under Text editor or HMTL editor or while attaching an image using attach field

As you can see in the above picture, I have copy paste an image under text editor by default it will upload as a public file only under Text editor, but it does the same in HTML editor, Attach field type and Attach Image field type.

so what I wanted is when I copy paste an image or any other file under text editor, html editor, when I upload image using attach field type and by using attach image field type it should automatically become private file instead of public file

Please help me out with this.

Thank you