Need to get fix following issues on existing HTML website

I would like to get fix following on my existing site, Also like to make few changes on website, 1. New Home page design need to change background color 2. Adding 2 extra pages. Also your suggestions regarding how to getting on top google ranking search engine. Please contact me if you can
1. Your Website Title tag is not properly optimized.
2. The description tag is not properly optimized.
3. Google's publisher is missing.
4. Canonical Tag Missing.
5. Robots File is not optimized properly.
6. Heading Tags Distribution is not proper (h1 to h6).
7. Some Image Alt Tags are missing.
8. Webpage content is not properly optimized.
9. Web page keywords density is low.
10. Keyword distribution is not proper throughout the webpage.
11. Social Media presence is low.
12. The website position in Google SERP is not so good.
13. The website is not ranked on the Majestic top million.
14. The website Alexa Rank is not good.
15. Website page speed is slow.

If any more extra you can advise feel free to contact me.