I need to create a website that holds some events data as well as other content, it will also maybe need to grab some data from APIs.

Since I'm skilled with Hugo (static site generator) I thought I could use that but it's turning out it's a total mess actually.

In Hugo I can have contacts (like events organizers) as taxonomy, but that is a different format (yaml) than CSV or vcard, and it's also static, meaning that if I edit a contact it will only change in Hugo. So I found myself having to manage contacts in 4 different places, in 4 different ways: Hugo yaml, Thunderbird, google contacts, CSV (from earlier days)... And I will add mailchimp once I'll also add a newsletter. This ensures my contacts are kinda becoming a mess.

Same goes with events, it's okay if I generate events in Hugo, but if I grab events from APIs and then the API content changes I will have to modify it on Hugo as well.

Everything it's turning out to be a total mess essentially and I think I tried to use something simple to build something quite complex, I realized the complexity later.

Now ideally I would like to be able to have my contacts, my newsletter, my content in one single place ato have everything nicely synced and not having to deal with 30 different lists or formats.

What should I do?

I know about the jamstack and headless CMS like ghosts and I was wondering if they could be a good solution, or if I should opt for a full CMS. Obvious solution would be WordPress but I wouldn't really want to mess with all the plugins.

Also I spent quite a but of time in building my templates for the Hugo website and throwing everything away would feel awful, if there's a way to reuse them (?).

I know some JavaScript basics but I would avoid it if possible.