My 10 years old site was on top of Google SERP against all major keywords and was on PR4 and my keywords stayed for years. All of my keywords moved to page 5 onwards in Google search results. I have requested all sites to remove my back links not having no follow links. I saw little bit improvement but my website keywords are not being recovered.
I have already revised all basics of SEO and contents. Pages coding is still old styled. Does it matter enough in SEO improvement if i revise it as well though its clean.
I am doing well on facebook and twitter. I need some help what else should I do to improve my SEO. Will my keywords never come back on first page again?