Show webscrape data on wordpress website

Latest wordpress version, twentytwentytwo theme with block editor. I want to show packages from pub,dev website on my websites when someone searches them on my wordpress website. I saw a video about it and it says that I need to edit the php of the page that I want to create but pages are stored in the database instead of php in the wordpress directory

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So I decided to create a shortcode for the scraping and put it in my functions.php. Do I need to save the full code there? Is this the correct way of doing this?

 

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