Manage negative reviews
Negative reviews happen - and that's not all bad. A balanced view of a realtor in customer reviews looks more credible to people because it provides a sense of transparency ("this realtor isn't hiding anything") and fits in with a common belief: nobody's perfect. In the world of online customer reviews, you don't have to be perfect. You just have to be honest.
So, here's tip #1: Don't sweat negative reviews.
Tip #2: If you have more negative reviews than positive reviews, it's time to get some good ones in there. Start by
asking former clients (including family & friends) to leave you a review. Then, for each new client you get, finish your time with them by reminding them of what you did to help them buy/sell a home and inviting them to leave a review for you here. Be totally clear about the work you've done as, sometimes, the work realtors do is so 'soft' that people don't even understand what you're doing to earn your commission. Tell them the hours you spent marketing their home & showing it - and don't forget to quantify exactly how much cash you put into marketing or searching for their property.