Thanks so much for your response. I found that deluge was misconfigured and was the culprit. I reconfigured it and deleted the docker and rebuilt it, and the space allocated to deluge is acceptable now.
So my question is, where did all the old files go?
Over the past few weeks, certain apps just would shut down, and then i noticed that my docker was filling up. Attached is a diagnostic before I rebuilt it, and even after, it seems to be not working properly and still filling up. Please advise on what I should do. Thanks in advance for your help. tartaros-diagnostics-20211229-1405.zip