Since my central server is now more powerful, has a Raid1 and the topic of "privacy" is becoming more important, I moved all my data from public cloud services to my own private cloud.
I use Nextcloud to provide my private cloud service. I can access my data through a web based UI, a android app, sftp and locally via Samba (SMB/CIFS). In addition, the mobile app provides "Instand Photo Upload" for my phone.
One reason for using public cloud services like Google Drive was, that it is a perfect backup solution. Since I did not want to miss the security of these public clouds i use it as a second backup. But this time in completely encrypted form. This is exactly where my separate software project CloudSync attaches.