Your Q is too general (No way to know how you integrate your export code inside wordpress and/or what are you SEO site issues/problems).
You should follow some basic SEO course (Google/Youtube).
The site-tree/content (“export html” without blog/cms-pages) on webflow (
heading level and so on).
The “technical side”:
meta data and other ideas on wordpress (Or yoast) + Blog/CMS items.
Yoast is not an “magic” (This is only a tool for SEO - if you install yoast and do not do any optimization/changes related to yoast monitoring you wont see a lot of change).