Found this little fellow in a forgotten window (Help)

[Oskar]

Hello!

I'm not really sure this is the right section of the forum, if not please move the thread if thats possible.

I found this little fellow in my mother in laws window the other day (Attached pictures). I believe it's a phal, what kind of phal i can't answer.

This is after i cut off about 10(?) black roting roots, i think those i saved are OK. Or at least working for now. One is grayish brown, don't know about that one.




There is about 5 roots left (Picture) are these ok?



There is brown areas underneath one leaf (Picture)


Beside the negative, i think there is still enough energy in the plant since it's growing a new leaf and what i can see is trying to develop new healthy roots.



I'm really grateful for all the help and tips i can get. Hopefully this phal isn't doomed!