This isn't really a great characterization. These are not the "hallmarks" of long covid. I appreciate that they may be the hallmarks of your experience, and you've attributed that experience to post-acute sequelae of COVID. But it just at minimum imprecise and at worst irresponsible to push ketamine in any broad sense as a treatment for long covid. There may be certain situations, e.g. individuals with significant history of mental health issues including suicidal ideation, recurring depression, cyclothymia, etc. that were present prior to COVID and recurred after COVID, where these interventions might make sense. But interventions like ketamine make most sense in the context of that mental health history, and not distinctly in the setting of a post-viral syndrome that is more commonly characterized by far more benign manifestation.
Look last post on that particular topic in this thread. If you want to dig into a discussion of long covid, I am certainly inclined to do so. But let's take that to another, more appropriate thread of your choosing.