Hi, I hope you recover fully and soon get back in shape. As far as I know, for any resident visa (assuming you are on a resident visa), you need to make at least one visit to the UAE within six months of your departure date from the port of exit in the UAE; otherwise, the visa will no longer be valid. If it is an employment visa, your employer would have automatically put you under "absconding." If your intention is not to go back, then it might be fine from your end, but to actually cancel, the passport is a must to cancel the resident/employment visa in your passport.
I suggest reaching out to the UAE embassy in Delhi for assistance or to address your queries.
Thanks