Let me try this again. I do not see any live roots. That is difficult to overcome.
You can try putting it in a 3" plastic pot, shady and tight in long fibered New Zealand spagnum moss. It may put out a few new roots in 4-6 weeks. More roots in 6-8 weeks. But then again, it may continue to decline.
The moss should be damp, not soaked and not dry. Put it in very little light.
Anchor it into the pot with a rhizome clip. If you can understand everything I am saying you have a chance of bringing it back. I would have no better then a 50-50 chance with all of my experience. You would honestly have LESS then a 1-10 chance. If you want to beat those odds, go ahead and try.
I would rather see you throw it away and get another one. Read, learn and enjoy the new plant and hopefully grow it better. I feel that your desire to save something that you feel that you messed up with is admireable, but foolish!
