Attachment Template

Hello,

I want to make an attachment template for images, so that they open in a page where i can have the title of the image, a link ”back to post”, ”next image”, ”previous image”, and also some share buttons under the image, but i don’t know how to do this, i’ve took an image.php file from another theme and i have added it on the server in the root directory of the Highend Theme but it doesn’t work, when i click an image it take’s me back to the post. Can you help me please with this? I have attached the image.php file.

Thanks!