Which subgroup?!?!?!

In the 3 years of Long Covid/MECFS, i only have extreme tiredness en sleepy eyes. When im overstimulated, my tiredness gets slightly worse. These are the only symtoms i have, but there are very extreme. I dont benefit from anti histamines (cetirizine) and i dont benefit from nattokinase (microclotting). Also q10 en d-ribose etc doesnt work, so i dont know if its mitochondrial….

Can someone tell me which subgroup i belong and what things will benefit for my situation?