I had pretty much the same experience. I did a little digging and you are right. It’s not strictly Covid, but just the trauma your body went through. They called it shedding, not hair loss really. Because it comes back. I had a terrible time eating for a long while after Covid. I’m fine now. I was in the hospital and got all the standard treatments they were using a year ago since I had pneumonia. I came home with oxygen but got rid of that pretty quick.
My sister is a nurse and they used her floor for Covid cases back then. I was on her floor for 6 days. She had a lot to deal with. They all did. When I didn’t respond to the treatments right away, I could see the worry in the nurses’ eyes. I know they had many that didn’t make it. It had to be devastating to be a healthcare provider at this time. OP has every reason to feel like she does right now.