Magento has its own recommendations, so you will need to make sure that you are not showing them.
With Algolia, to generate the recommendations, additional click events need to be sent from the frontend to Algolia. The events included in the Personalization configuration of the Magento extension can also be used for Recommend (note that this is only available from version 2 onwards of the M2 extension, events will need to be coded manually if the extension isn’t upgraded).
Displaying recommendations is done outside of the Magento extension.
The first step is to install the Recommend JS package, just as you install any other JS library on your site today. Next, by adding an ID in the Html, you can target the part of the UI where you’d like to add the Recommend widget.
The widget will be created in JS, we have examples of the widgets in the usage guide.