Trying to save grandma's orchids (clueless newbie here)

[chloe13]

Hi all,
I apologize to be such a clueless newbie, but clearly you guys really know what you're talking about and I'd appreciate your input...
My grandmother has grown cymbidium orchids for longer than I've been alive, however, recently the orchid houses in the backyard had to be torn down and she's no longer able to care for them.
She got rid of most of them and only about 20 were kept in black plastic pots under a large shady tree in the yard since then.

Last week my grandma gave me one to take to my new apartment, since it's the first with my own outdoor space to keep plants.
It was in pretty sad shape and I'm not even sure it's still alive?
Since it was kept under a tree, the pot was full of dead tree leaves and the pot was also cracked so I hastily re-potted the plant, which I realize now may have been a mistake.

After taking out all of the dead materials from the pot, the plant itself was fairly loose and came out pretty easily. It looks like it might be 2 separate plants, but since they were in one pot before I repotted them together in one pot.
The orchid had a lot of built up dead leaves and nubs I'll call them, I don't know what they actually are, but if it didn't easily pull off I left it alone in case they weren't actually dead.

I used an orchid potting mix (Miracle Grow I think?) and have been watering it, what I think, is thoroughly every other day or so. I noticed the pot had "rolly pollies" and itty bitty black spiders in it as well as some slugs, are these guys bad or should I let them be?

Again, I apologize for really knowing nothing about taking care of orchids other than watching my grandma as a child. I don't know proper terms either, so hopefully this has made sense and if not here are some pictures of my plant.


This is one of the two 'clusters' or plants, which is also crooked and not interested in standing up right...


This is the second cluster or plant...


Full picture, taken before I did some additional tidying up. The close-ups were taken today. As you can see, some of the longer leaves have cracked and are bent in half. There's also some black spots here and there, and some of the leaves tips were black which I cut off.


I would appreciate any advice in caring for my new orchid as I'd like to be able to restore the rest of my grandma's orchids so she can have some flowers again Thanks in advance!