I'm not sure that we can accurately tell from the photo how tall the Chamaedorea is and the width of the pot. Not knowing its size makes it difficult to determine the particular Chamaedorea species and its light & water requirements.
Why is soil(?) piled up higher than the pot rim? It looks like someone repotted it.
I suggest that you cut off all of the fronds that have already start to discolor because they will not recover. Also, all Chamaedoreas are spider mite magnets and that could be part or all of the problem. Spider mites look like tiny dust particles on the leaves. If you spray the plant with a fine mist, the water droplets will expose the tiny spider mite webs if mites are present.
