Anyone actually developing seo strategy successfully?

yes, but "strategy" for most sites that work is boring. start from the pages that make you money, not from a keyword tool. for each money page: what would someone type right before they need it, does that page actually answer that, and what does it rank for now in search console. then fill the gaps with supporting articles that link back to it. fix crawl and indexing issues before writing anything new, otherwise new content lands on a site google barely reads. the part people skip is reviewing it. every quarter check which pages moved and which didn't, and drop the topics that never got traction instead of writing more of them.