Resolve Google Search Console Errors

I'm experiencing issues with my website as reported in Google Search Console, primarily duplicate canonical errors. Additionally, there are some page speed and structural issues that need to be addressed.

Key aspects of this project include:
- Prioritizing the resolution of duplicate canonical errors first.
- Providing professional advice on the best method to manage these issues, as I'm not certain whether manual correction or automated tools would be most effective.
- Addressing page speed and structural issues thereafter.

My website does not utilize a Content Management System, so all solutions will need to be applicable to a non-CMS site.

Ideal skills and experience for this job:
- Extensive knowledge and experience with Google Search Console.
- Strong understanding of website technical SEO, particularly with canonical issues.
- Proven track record of improving website page speed.
- Ability to provide clear, professional advice in a comprehensible manner.

Technology being used: Nextjs, Node, react
Pages impacted: 15k-20k

I will give 50k INR to anyone who would resolve 100% of these issues.