SEO optimization (internal)

We need to make a trail. Work:
Internal work (internal optimization). Preparation of the site and optimization of the promoted pages.
1. Elimination of technical errors on the website
2. Distribution by group and relevant pages.
3. Optimization of meta-data (title, description, keywords, alt)
Analysis of duplicates, meta-data on the pages of the site.
Ø Optimization of title.
Optimization of description.
Optimization of keywords.
Optimization of H1-H6 Headings.
4. Working with website content
Optimization of the text on the site.
Image optimization.
5. Optimize the structure of the site
CNC setup.
Set up internal linking.
Work with the bread crumbs of the site.
6. Work with Sitemap.xml and Robots.txt files
7. Work with microdata (extended snippets_Google and Yandex)
8. Installation and configuration of Google and Yandex analytics meters