Online Forms for Calc

Is there any way to build online forms that use Calc as a backend for data collection and reporting?

I’m not sure if it fulfills your requirements, but often (maybe always) one can export forms data as CSV and analyze them using your preferred spreadsheet application. e.g. Nextcloud Forms supports CSV export…

The function I am specifically after is a way to have an online form with Cascading or Dependent Drow-down fields. So if you had a State field and a County field, the State selection would limit the County options. I’ve tried using Nextcloud Forms and Tables as possibilities but cannot find a way to use them either for this purpose.