I need a full revamp of my SEO for my website.

We need someone to get our website SEO friendly again, we had ranked number 1 for our keyword for some time and unfortunately we have another website that is copying our website and has now ranked above us. We need someone to add a site description and improve our overall SEO:

Optimising Meta tags, including title, keywords and descriptions
➡️ perform keyword (search query) analysis
➡️ manually optimise these tags for all relevant pages based on the content of each page/post
➡️ Install accelerated mobile pages (AMP) plugin so you’re in line with Google’s latest recommendations
➡️ Improve your image tags
➡️ Add schema markup (Structured Data) for logo, general business information, phone number (if appropriate) etc.
➡️ Ensure H1, H2 and H3 tags are being used effectively
➡️ Setup and configure a sitemap.xml file, and submit it to Google
➡️ configure Google to maximise your search results for a particular country or geographic region.
➡️ Ensure any robots.txt file is configured correctly (most Wordpress sites do not have optimal settings)
➡️ Make sure your URLs are search engine friendly (and human readable)
➡️ Ensure your social network profiles are linked too