Is there anyone who understands plants?

Last November as a present I had monstera. she gave a new leaf lately but it turned black so suddenly and the new leaf dried and died. now two of her leaves turning yellow. I dont understand what she doesn't like. Too much water or too little? Or the soil is not good? Maybe light? What she wants? Help.

Is there anyone who understands plants?
Is there anyone who understands plants?
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