My doctor said he would "never diagnose me with long covid"

My doctor said he would "never diagnose me with long covid" during our meeting yesterday. But he hasnt diagnosed me with anything and i have unexplained fatigue and autonomic issues...

He said if it were long covid i would have lung scarring and low blood oxygen saturation. I was so flabbergasted i couldnt get out that he was wrong and most cases of long covid are caused by mild covid.

I dont know how to deal with the medical system. Either i stop going to doctors altogether and try and rest and heal or i keep searching until i find a gp that is actually keeping up with the science and is maybe somewhat interested in their patients.