No, it's not possible on any platform. The only thing I've successfully done is just changing the name of the business listing to get rid of a flurry of fake reviews.
The good news is, you can just get good reviews to cover the bad ones, it's really not that hard you just have to be proactive...
It helps to cite, especially when referencing content. It will make your content look more legitimate both from a robot and human perspective.
I would not link out for the sake of just linking out, you will lose link juice.
Also be sure to utilize "no-follow" tags on the links.
I recommend myself. I do suggest someone who can find topics and write on local topics to boost local SEO. You can see some of the knowledge I have here: https://www.linkedin.com/pulse/local-seo-tips-2019-matthew-lane.