Petals drooping and wrinkly/dark roots

[springblooms2]

Hi there. I am new to taking care of orchids. A few weeks ago, I bought a mini orchid from the grocery store...maybe not the best place to buy one...? The roots looked kind of wrinkly when I bought the orchid.

I have been watering my mini orchid with 1 ice cube when it is completely dry at the bottom. I also have been misting it daily. I have it facing an east window.

A few of the petals are drooping. The roots still look wrinkly.

Last week there was one petal that started drooping and then the whole flower died.

Am I taking care of my orchid correctly? Is there anything I should be doing differently?

I have attached some pictures.

Thanks so much for your help!

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