How do I make this grammatically correct?

One of the primary reasons for Volkswagen using cheating software, is that the car market is one of the most fluctuating and changing markets for auto

One of the primary reasons for Volkswagen using cheating software, is that the car market is one of the most fluctuating and changing markets for automobile companies. Since the company was already decreasing in popularity prior to the scandal, they needed an immense boost, in hopes of becoming the apex company they were known for being.

please help me, I'm so confused

or:One of the primary reasons for Volkswagen using cheating software, is that the car market is one of the most fluctuating and changing markets for automobile companies. Since the company was already decreasing in popularity prior to the scandal, they needed an immense boost, in hopes of becoming the apex company they were known for being.please help me, I'm so confused

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