Many professional web site builders use WebFlow. It’s a stand-alone build/host platform with all the tools you need to diy.
A professional web site builder in my family swears by it.
Unfortunately if you have your site built already on Wordpress you’d have to rebuild the entire thing in Webflow.
That being said, I use Webflow to help maintain my friend’s website. It is customizable and powerful, and has great customer service if there’s a problem.