If you want to get anywhere as a writer, you need to make sure that someone reads and reviews your work. People often won’t even look at a book online if it doesn’t have any reviews attached. People look at the star rating before they will even read the plot synopsis in a lot of cases. You need to have a star rating to begin with, and it should ideally be at least three stars or more.
In many cases, you find willing reviewers through a simple case of mutualism. You review something of theirs, and they review something of yours. You can contact other writers directly in order to set something like this up in some cases. However, it is also possible to do this more passively. Reviewing the work of prolific reviewers can often cause people to become successful in that manner, even though it has fewer guarantees.
Reviewing other people’s work can at least get your name out there, and this can get you more recognition to begin with. You need to make sure that you’re not just a lurker online and that you are constantly using your time as a writer to really make a name for your work. This is how you get noticed.
Of course, part of getting people to review your stuff is just a matter of making sure that a lot of people even see your stuff. You need to make sure that your books are getting the traffic that they need. If thousands of people see your book, some of them will review it. If dozens of people see it, you will probably stay obscure.
Even bad reviews can be better than no reviews, although good reviews are still obviously better. Good reviews that appear to be false and overly friendly are still often better than bad reviews. Not all of your reviews have to sound like professional critics. They just need to put in a good word for you initially.