I've been providing SEO and web analytics help to dozens of customers for more than a decade. I've seen websites teetering on collapse brought to life again through proper analysis.
Google Analytics and Google Search Console are two important tools for seeing how your website grows and changes over time. You want to know where your customers are coming from, how they're getting to your site and what pages they're visiting.
These tools can be difficult to understand and there are so many aspects that go unnoticed. This is just for analytics analysis and not set up or changes to your analytics code. I can examine your analytics and search console and provide you with much needed information.