I lost two years of my life to long covid, which thankfully I seem to have recovered from and have every sympathy for what you are going through Flemingcool. you will know the utter frustration when you are unable to do so much you could do before and you feel you constantly need to justify your condition, when all you want to do is get better.
My family worked in hospitals and saw the full effects of the first wave they were both in the thick of it and saw so much death which was traumatic for them and were so glad vaccines were developed, and understood risk and reward but my wife has had bad reactions to the vaccines on 4 occasions, the last time scarily so. Now we do have time to do the scientific evaluation and research into the benefits and drawbacks of this new class of vaccines without the pressure we had at the height of the pandemic.
The scientific method needs openness and debate research and evaluation of benefits and drawbacks, dismissing those who have concerns about the side effects of this new form of vaccine as automatically in the anti vaxx camp is not going to get us the quality research that we need to understand how Covid effects so many people in so many different ways and improve our understanding of the mechanisms of vaccines.
I do hope you get better, after trying everything and in the end accepting I probably would never return to my previous life, I just started slowly improving being gradually able to do more and more to the point it was gone and have just come back from cycling in the mountains of Spain. I only tell you that because at the height of my symptoms I thought my active life was over and completely lost hope, I tried everything and nothing seemed to work, I had many false dawns and I suppose I was just lucky that it gradually tailed off of its own accord. No advice just look after yourself two worst years of my life