I would get someone to help you look at the latest research into brain fog and cognitive difficulties, especially microclots research in Germany & South Africa. Also , watch youtubes by Dr Binita Kane as she interviews specialists from around the world about the physiological reasons for symptoms like brain fog .

Dr Binita Kane & a cardiologist ( at their private clinic ) will if appropriate, prescibe a triple anti coagulation therapy to help with brain fog .

Look on youtube for Dr Binita Kane

The long covid clinic what you can do to watch and learn.

It doesn't matter if your symptoms began because of a mild covid infection or something else . A massive amount of research has been uncovered because millions globally have new onset symptoms which standard tests show no cause for .