My site has been sinking like a rock for over a year. I need some seo help. I've used Semrush and other tools, but nothing, and I mean nothing helps. Every large update sinks my site further. Any recommendations? I'm thinking of hiring someone, but the project is so big I just don't know if anyone could help. I have about 7000 pages. Finding the problem is like a needle in a haystack. Anyway, suggestions?