I'm in the progress of open-sourcing (and extending) my static-site generator "CMS" (with big air-quotes).
The idea is to add dynamic content, i.e. reservation tool, to what is essentially a statically hosted web page.
Demo: https://astro-booking.pages.dev/booking/
A bit more details: https://www.nordstroem.ch/posts/2025-01-15-to-the-stars.html
My website is statically generated. The biggest problem I faced was adding comments to my blog, that didn't involve loading a ton of JS or third-party services, or add and maintain backend software (say php).
Do you think your dynamic content could be comments?