Displaying dynamic content from an API call

Site URL: http://www.nycrentdeals.com/

I built a React app for a website that displays real estate listings. The data for these listings is stored in a SQL database and the React app handles the heavy lifting of querying this database and displaying the results on the frontend to the site visitor.

I'm considering switching to a more easy-to-use frontend service like Squarespace but I'm having trouble understanding if I can still use my database with Squarespace. Ideally when a visitor comes to my Squarespace site the site will query the database for the latest listings and display them. I can expose the data through a RESTful API if that's what it takes, but I can't find any Squarespace documentation explaining how to serve up the variable listings on the frontend. Is this possible? Links / resources greatly appreciated!

Thanks,

Alex