Yeah dark trips can and do happen alright. .
BUT the lower kip improvement sounds encouraging, no? If you can get some lasting therapeutic benefits CH-wise, I bet the unpleasant memories of that tripping experience will fade and this will be looked back on as an overall positive.
I haven't personally done so great at getting myself squared away with set and setting, which is considered so important for trip experience, but I hope you may be able to change things up there if you bust again Sergi.