Uninstall NextCloudPi

I installed NextCloudPi using the following command:
curl -sSL https://raw.githubusercontent.com/nextcloud/nextcloudpi/master/install.sh | sudo bash
Then I ran the wizard, added some files…

Now I want to uninstall and remove everything concerning NextCloud including including the database etc. But I do not find any real step-by-step docs how to do this.
Any help is greatly appreciated. Thx!

the most easier: reinstall OS!

There were over things running/set up either. I would rather not start all over. :frowning: