Help with usage and user usage

Version: 10.0.9
Univention appliance on a linux server.

If I run “df -h” I get the following:
udev 10M 0 10M 0% /dev
tmpfs 293M 17M 276M 6% /run
/dev/mapper/vg_ucs-root 2,0T 710G 1,2T 38% /
tmpfs 731M 0 731M 0% /dev/shm
tmpfs 5,0M 0 5,0M 0% /run/lock
tmpfs 731M 0 731M 0% /sys/fs/cgroup
/dev/sda1 472M 106M 343M 24% /boot
overlay 2,0T 710G 1,2T 38% /var/lib/docker/overlay/b2826b30eaa7ee8e369959d945e98b85db1e847e9165ae3dfe05bac290529833/merged
shm 64M 0 64M 0% /var/lib/docker/containers/b695096976e6de663e505b39df9d36a125f9d82992ae28d653752a3274a17813/shm

According to this there should be 1,2TB free on the data partition.
But when I check in VMware it allocates almost 1,9TB of the 2TB size of the drive.

Is there a command I can run that shows the users individual usage?
I have tried to google it, but I cant find any proper information.