Need Help About How Play Store Review Shorting Works

Actually what happen when people open my page then they very first seen 4 reviews which play store short by helpfulness . Now, some of other competitor add some bad reviews on my play store page and now I have to down that review from home screen…

Do You have any idea about how to increase value of other good reviews so it shown on my home screen. Or how this review helpfulness algorithm work…

Thanks and Regards,
Raj