I understand the frustration you feel but please don’t give up. The next place or doctor you see might be the one who has an answer but it does seem you need a break. Please give yourself permission to rest and be good to yourself. I have had long Covid for 3 years and suffered through so many issues. I,too,have had ups and downs so I understand. I have to take breaks from the constant search for answers. Then I go back to it. Hang in there. Ignore the insults and arrogant doctors. Take the learned knowledge of a professional (you’re paying for it) but take little else. Then soak in the kindnesses and true caring from the good ones. Sometimes doctors don’t realize they can do more harm than good. But just like the negative persons can hurt the good ones can help. I wish doctors, staff, and others realized that a kind word and gesture may help a compromised person feel better well past the moment it is given. Our mental or emotional parts may need healing,too. I was in the hospital recently. I saw several doctors on a particular day but the one who made the difference (in my mood and feelings) was the one who quietly walked over to my bed, looked into my eyes ,squeezed my arm and said, “you’re going to get better. I will pray for you”.