Building a user submission history log

Hi,

My goal is to have a form that allows users to input any combination of characters and then once they submit, the following page displays a history log of all submitted entries from visitors. I am looking for some way to store and display form entries that does not have lag. Linking a form to a google sheet then displaying the sheet on the following page did not work well because it took too much time for the entries to update and publish. I am building this website as part of a short film project and have only the SquareSpace experience that I have gained in the last week. Thanks a lot for any help or suggestions!