That’s why blog posts rock. Most popular projects will have a dozen blog posts for different configurations. For example, when looking to set up NextCloud, I found docs for almost all combinations of the following:
Apache and Nginx configuration
running through Docker or directly on the host
MariaDB and Postgres configs (and SQLite, with proper disclaimers)
Collabora and OnlyOffice config
It does take some knowledge of each of the above if you need one of the few configs that’s not available on a blog post, and some of the posts are outdated, but with a bit of searching almost everything is documented by someone on the internet.
This shouldn’t be necessary (official docs should be more comprehensive), but at least it’s available.