Could be a few things going on here.
Firstly, most of the best leaders I know have had something similar happen to them at some point in their careers. They learned from it and moved on.
It's difficult to confront this kind of situation in these unusual times. I would have called everyone together and said I was disappointed to receive the feedback, I want to be the kind of manager they deserve, what am I getting so wrong? You might get honest opinions, you might get some backtracking. But everyone is getting the same message that you are taking it seriously. Not sure how well Zoom works for this kind of session.
I'd then do a "reverse appraisal" with each individual. Where do you feel unsupported? How can I help you do better? Where do I let you down? Is there anything I do well?
Last stage is to go back with the plan. New beginning, describe how communication will work, and how you will set your expectations for their performance just as they have set yours. Management is a job, not a status. You're not more important, but you do have a job to do and want their help to do it well. In return, you'll help them do theirs.
This doesn't mean you are a lousy manager. The fact you are taking it seriously and not making excuses suggests there is a real understanding of what is required and a will to get it right. Many people would have became defensive and looked around for scapegoats.
I'd also ask your boss for honest feedback and perhaps some coaching and support on leadership skills?
Don't let it get you down. Might well be the most useful feedback you'll ever get.