Sorry to hear your story wmcforum. Long Covid is definitely a thing but how much of a thing is of course unknown. My daughter had covid quite badly and recovered completely. Mrs W had mild symptoms which we believe was the virus and has been suffering from fatigue ever since.
I’ve been offered the flu vaccine for many years but haven’t bothered despite catching flu badly enough to put me in bed for two weeks two winters ago. I’ve decided to have it this year. I’m not going to risk being laid low by flu and the possible complication of the coronavirus on top.