My phalaenopsis orchid grows outdoors in the humid Florida climate. It was in a clay pot with only one draining hole in the bottom. I used bark on the bottom (so that water would not sit there forever) and the better-gro orchid moss on the top. The lower leaves got wrinkled when it was replanted 1.5 years ago and a bit later they cracked in the middle. However, the new leaves were growing perfectly healthy: juicy and smooth. The plant is large and needed a 12.5"+ pot, but I was not able to find a good big enough pot for it fast. When I pulled the plant out of the pot, majority of the roots were white and very fragile (please see the last 3 images). I cleaned it, trimmed a few bad roots, but it got dark and I had to leave it out without any medium for a few days. In a few days, the roots got many black spots in many places and in all of the places where the roots cracked (please see the first 6 images).
Could you please tell me what to do with these black roots? Should I leave them alone or they need to be cut?
This is my largest and oldest plant. My heart hurts seeing this. It is clearly my fault. I do not know what to do. I spent a lot of time googling images and posts, but did not see anything similar
I so need help for my beauty.
Thank you very very much in advance.