Anyone tried using biofeedback to help with post-COVID symptoms?

I don't have any experience with biofeedback but while you wait for other members with experience to respond you find the following newsfeed article on the topic helpful.

-- Post-COVID Recovery:
https://connect.mayoclinic.org/blog/post-covid-recovery/newsfeed-post/post-covid-recovery/

On my own I reached a point, Faith based, that I am DONE identifying as a victim, I can't continue in my private pit. No one wants to hear me continuing lament of my loss of taste,smell, brain fog,
loss of coordination& bad balance, legs heavy with slow response, sleep difficulty , weird disquieting dreams, some paranoia, weight loss. Friends&family try to continue supporting but they are weary of talk
about it. I AM A WARRIOR. I AM MORE THAN THIS.

Thank you, John.