Bumping conversion rates doesn’t have to be as hard as people make out. Just trying out different headlines can have a massive effect on your conversion rates.
VWO is a fairly easy start to the learning how to do this and it’s got a decent enough free plan for just playing around with.
As a minimum, you should be using tools like this to make sure that changes to your landing pages don’t actually make things worse.
Try it out at https://vwo.com/