The best SEO is straightforward. This is what happened to WP Beginner because they did not give the answer at the top of their pages. This is what happened to clickup because they also did not give the answer at the top of their pages.
How adding TLDR boost conversions by 33%? For articles, added a short two to three sentence summary at the top, giving the main points right away. For product pages, wrote a quick summary of the product's features and benefits placed right under the title.
When you give the answer right away, it prevents searchers from going back to the search results to look for a better page. That is one of the best ranking signals for Google. Everybody thinks you need fancy hacks to succeed at SEO.
Most websites aren't even doing the basics. Save years learning SEO that converts at compact keywords com.