My first bout with CoVid happened in 2020, a mild case which was followed by a moderately severe case (Ormicon, I think) immediately followed by covid induced Pneumonia in late 2022 - early 2023.. I've been struggling ever since then with long CoVid recovery including most everything you have mentioned with the exception of taste changes. I was an active, retired 75 year old into car restoration and landscaping of my hilly 1 acre property with 4 bed house. That's all in limbo now. Luckily, kids are gone and its just my wife and I at this point, because I have still not yet fully recovered from the fatigue and associated MALAISE along with muscle pain and weakness (pain on exertion and weakness in general, especially in the legs), sensitivity to light and noise and temperature variation along with most of the other Long CoVid symptoms .
I've taken all the usual steps including various GP docs (clueless) and outside of the box naturopath docs, (moderately helpful). Tried diet changes including Gluten free, high protein and max supplementation, etc. (not effective). I can say that I am finally very slowly coming out of it, but temp variations and bright light just drives me nuts daily. If its too warm (hot isn't necessary) I am hit by the heat and sweat... If its too cool (cold isn't necessary) I have chills and am freezing... This all occurs in about a 15 degree temp range. Bright summer sunlight HURTS my eyes now. The fatigue is awful and I often crash in the early afternoon after which I REQUIRE a 2 hour nap in order to continue for the rest of the day. It's still a huge challenge to make it up the stairs, but at least now I am able to do them normally and not one step at a time like a year ago. After the exertion my muscles seriously hurt, and it's a different kind of muscle pain than I have ever had before, which makes it VERY difficult to get enthusiastic about ANY kind of physical activity... And if I force it, I pay the price with muscle pains for days.... The maliase kills my desire to socialize so you put it all together and it's a real long term bummer.
I can tell you this from my experience... Go find a doc who will TEST to get DATA to make decisions with. A full range of blood tests from a naturopath who will do ALL the vitamin, mineral, etc blood tests and then supplement to get them within range. CoQ10, magnesium, Vit B12 ( I am now doing self injection in order to get levels back up). Vit B, iron (ferritin levels were low), helped me, but it might be different for you, that's why you need to get tested to get current DATA. I also did adrenal tests (normal) , heavy metals (normal) fungal screen (normal). The best post CoVid therapy for me long term has been SLEEP and....
Luckily I found this forum on Mayo and read about the Nicotine Patch treatment. I can say that this has noticeably helped me with my long CoVid symptoms including fatigue and weakness. I use the 7mg patch daily for a week on and then nothing for a week off, rinse/repeat. When I am using it, my energy levels can get back to near normal and eliminate my napping issues, the muscle pains from exertion are moderately reduced, fatigue is lessened and my cognitive issues are improved. You can read about it in the covid support group. In my case I think the nicotine patch, vitamin B12 shots, CoQ10, iron and fish oil supplementation have been the ONLY treatments that make a difference, along with LOTS of sleep and time. I am finally very slowly coming around. With luck I'll get back to near normal again..
I wish you the best of luck dealing with this awful condition that almost NOBODY seems to understand and even fewer have sympathy about.