Google’s John Mueller said on Google that exact match domains (EMD) do not get a magical ranking bonus on Google. For example, your website won’get a ranking bonus for the keyword “blue widgets” if the domain is “www.blue-widgets.com”:
Well, if there's *no* competition, then do whatever you want. There's no magic EMD bonus.— John ☆.o(≧▽≦)o.☆ (@JohnMu) 7. Juli 2017
Of course, exact match domains often have links that contain the exact match domain name. That might lead to an indirect ranking advantage for exact match domains because they are linked with these words. In 2012, Google released a penalty for low quality exact match domains so you have to be careful with that.
There are many more factors that influence the position of your web pages on Google and other search engines. Use the Top 10 Optimizer and the website audit tool in SEOprofiler to check your pages. You can create a free account here: