That why I suggested/mentionned Sveltia CMS, which basically add a CMS backend based on Git to a static site.
using Gitea Credentials/permissions, he provide a wysiwyg editor, and it handle all the commit/push side, allow using "review" (Aka Pull Request) ... it's neat
It runs on WordPress[1]. @Stan` was saying that Git is not very accessible to non-developers, but I don't know if WordPress can be configured so that anyone can modify the texts.