If your conversion rate isn't where you want it to be, there are a few analytics that could help.
The first place you should look is the bounce rate. Search Engine Journal said, "People can leave a webpage for a million different reasons. This can be anything from problems with the entire layout to subpar content, to something as minuscule as the color of the CTA button." Dig in and figure it out.
Then, check your page speed. It really makes a difference!
Other metrics you should check include new vs. returning visitors, referral traffic, and exit reports.