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module hook:

public function hookHeader()
{
  if ($this->context->controller->php_self == 'product') {  // identify page name  
    $this->context->controller->addJS($this->_path.'views/css/script.js'); // your module javascript
  }
}

Sometimes it's better to show the page so a person can check it.
It is not always possible to solve everything according to the picture.
I'll give you a picture of the car and leave the front hood closed and ask you to tell me where my engine oil is leaking 😄