Help my phal!!!pls

[helpmepls]

I recently bought a phal but don't know the exact name. Last week when i looked at it, it's quite good. But three days ago, i found out that the leaves had all dry out rapidly and the root is also not in good shape. The last leave fell yesterday. I don't know what to do. So i just water it daily without throwing it away. Only the small stem and roots exist, nothing left. I hope i can get some keiki from the base. Is it possible? I really upset about my bad experience in phal. and it's my first one. So i'm upset. Pls help me and advise me .Thx