It surprises me that my criticism is received so positively. And it is absolutely clear to me that it happens in the leisure of the members.
I am very in many open source community forums. And most of them have at least 2-3 members who passionately help where they can. Because you have a passion for the software and like to use free software to use other people to use it.
It needs people who have a passion for free software. And I also find it great that Nextcloud provides its solutions to everyone.
I here that advanced questions are answered rather than the question of completely new users who have no basic knowledge. And I referred to the general situation and not just my questions. If you are looking for a problem, you quickly end up in dead threads here in the forum. And often with similar problems and questions that have new users. It’s just a shame. And of course it is about the participation.
Maybe the Self Hosting is still a sneeze.
Most do not have these problems. Because they use Nextcloud through cloud providers.
I also browsed the documentation through intensely.
And it is valuable to offer a solution for everything or to convey basic knowledge effectively.
It is difficult to ask targeted questions if you don’t have anyone who can answer them.
My unanswered questions are here at the moment
and
(in english: How do I scene the push to talk function in NC Talk)
With answering the first question of where I can find the relevant NextCloud Configuration file in a Docker Portainer area, I would have been really good. 
EDIT:
Ok the most important question was actually answered to me that I was looking for all the time to make further adjustments.