Migration from Nextcloud to Nextcloud

Best regards to Nachoparker for his great NextcloudPI implementation. Since I have rented a vServer again, I now need a way to migrate my NextcloudPi (newest version) installation to a “normal” Nextcloud 18.03 installation. If need be, it would help me if I could export the NCP database and import it into the Nextcloud instance.
What to do
Best thanks in advance

Read backup and restore in the nextclod docs.

You can also only migrate the files perhaps with federated file sharing in nextcloud.