Anyone who has had a virus needs to look at if a vestibular problem is part or all of the issue.
10 Things About Vestibular Disorders You Probably Didn’t Know
https://www.eyevisionassociates.com/10-facts-about-vestibular-disorders-you-probably-dont-know/
One of the wildest things about my physical therapy is that even though I dont have the crystals loose in the ear issue my physical therapy is helping me with ear ringing.
My wife went through it -- fatigue, nausea, the worse "brain fog" I've ever seen. For her, it was supplementation and dietary changes. The symptoms have lessened but she's still dealing with pieces of it.
I dealt with the extreme fatigue and incredibly weird dehydration symptoms. Shook the fatigue after a year, still coping with the dehydration bit. Basically, I just had to let it run its course; docs and I found nothing to really help.
Thank you for sharing your plight. While I'm tempted to say "misery loves company" I don't really think that's the right mentality for these times. :-)
For me, it was the nausea, brain fog/dizziness, chronic fatigue and insomnia. It's about a year and I'm still battling it.