Start from scratch
This is one of the first steps you need to take to increase website traffic from free search results (Google, Bing etc.). By receiving a document fully tailored to your site, you can begin implementing optimization changes.
The audit process
All I need to do an audit is your domain. In turn, if you care about detailed analysis, you need access to: Google Analytics, Google Search Console and upload the verification code to Ahrefs.
Having a ready SEO audit, you are ready for the next steps, i.e. technical and content optimization. You can implement these elements yourself or have them specialized.
The Keyword Analysis service will help you in your next steps.