Without seeing the strategy and how it was implemented, I can’t know for sure why your previous attempts at SEO failed. Even if the strategy was sound (which isn’t always the case) there are many variables that can affect the outcome. Common problems include bad content, slow page load time, poor quality back links, and confusing site structure.
When you hire me, the first thing I do is a deep-dive analysis of your site. Then, I tell you exactly what you’re doing wrong, and how to fix it.