Long Covid is a new condition and the best way to treat it is not yet understood. Evidence like this from Hong Kong suggest that the benefits of acupuncture for people with long covid in the UK should be investigated. Acupuncture is recommended in NICE guidelines for fibromyalgia which is also potentially triggered by a virus.
https://thelondonnewsjournal.com/lifestyle/can-traditional-chinese-medicine-improve-long-covid-symptoms/