Q.plant turning yellow and brown
I have had my Philodendron for about a month. all at once it has started drooping and turning brown and yellow. I have been misting directly on the plant which I now hear that is incorrect. please help.

I would not advise misting a Philodendron.
These articles will refresh you on the care requirements.
https://www.gardeningknowhow.com/houseplants/philodendron/brown-philodendron-leaves.htm
https://www.gardeningknowhow.com/houseplants/philodendron/caring-for-philodendrons.htm