Too high disk storage usage question

I usually take care about storage usage on my PC and app about total disk usage on system tray shows that I currently use 110 GiB, but when I sum up total disk usage from Qube Manager it’s around 77 GiB. varlibqubes shows 39% of data that is assigned to 19.5 GiB. vm-pool shows 57.7% for data and 40.1% for metadata that is assigned to the rest.
Can someone tell me where is my 33 GiB? Dom0 that doesn’t show it’s storage in qubes manager isn’t that big, I checked 10 biggest folders, it’s not higher than 50 MiB.