How to save my dying catus?
My plant is dying what can I do to save it?
Well that's not much information for us to go on. The reason for decline could be from too wet, too dry, soil doesn't drain well. There are fungus diseases that affect cacti, and exposure to toxic material is possible.
Here's an article that may help you to get the growing conditions right. Pay particular attention to the soil and water requirements.
Good luck, I hope it recovers.