Suggest Optimize Performance and SEO to CoverLetter4U

I'm looking for a skilled expert to suggest and implement improvements on my website. The main focus areas are performance, speed, and SEO visibility.
Please verify out site so that we can get the clear idea what needs to be done and how?
https://coverletter4u.com
Key Requirements:
- Performance Improvements:
- Faster loading times
- Better resource optimization
- Improved server response time

- SEO Enhancements:
- On-page SEO: Optimize content and keywords
- Technical SEO: Improve site structure and XML sitemaps
- Backlink building

Ideal Skills and Experience:
- Proven track record in website optimization
- Strong understanding of SEO best practices
- Experience with site performance tools and analytics
- Ability to provide a detailed improvement plan and execute it

Please provide examples of previous work and success metrics.