Install en Freebsd

I am trying to install Nextcloud on a FREBSD 13 server.
I have tried many configuration examples on the internet.
But I don’t get it to work.
Is there an official manual for the installation?

For server operation have installed

Thanks for the help.

Aunt G. says that the following articles might help you. Beside the fact that newer Nextcloud versions require a newer PHP version, it should help you getting Nextcloud

FreeBSD 13 isn’t even in beta yet, you’ll probably have ongoing issues for a while. Ports may not behave as expected, and packages might be VERY incomplete.
Also, are you really using PHP 7.0? That’s kinda old. It’s odd your using an old version of PHP with an alpha version of FreeBSD!