I have been having a number of these symptoms but unable to determine whether long Covid or CFS, but as both are generally post viral chronic conditions, it's no surprise they come up very similar. I have started listening to people on YT giving what seems to be good advice about the para sympathetic nervous system and how to help the body reboot this calming side of our brains and combat all the stress/fight/f;ight over stimulation that seems to be at the core of these conditions. I hope you find your way out of the soup as I hope I do too.