What you are talking about is called parsing. Web parsing is a new data entry method that does not require re-entry or copy-pasting. This kind of software searches for information under the user's control or automatically selects new or updated data and stores it so the user can quickly access it. For example, you can collect information about products and their cost on the Amazon website using parsing. Learning how to parse sites yourself is not so difficult if you know at least a little Python, for example. But this is also done by https://transformagency.com/ companie, which you can contact.

It is best to let Magento set up by people who are already familiar with it, because it will be very difficult for a beginner to figure out such errors at first.