My friend and I run most things in kubernetes (k3s), and then we use longhorn to backup volumes, which then can be re-used if your cluster crashes. Here's a blog post describing the process (although not for nextcloud specifically, it could be applied to Nextcloud as well, as we do this for nextcloud as well)
Yes, I just used it to send my first 'Anzeige' this week. Read our other comments here regarding how many cases are actually followed up, we don't really know.
But cities like Berlin seem to be somewhat positive
Here in Germany there are some initiatives to get cars out of bike lanes by simplifying the process of notifying the authorities.
weg.li offers such a service by allowing you to upload pictures, time and place, and it will do the rest for you. It requires you to leave your name and contact details, since the police might need to contact you
Germany? Ideleted it today