WordPress Speed Optimization

I need an expert to significantly improve the speed of my WordPress site built with the Hello Elementor theme. Currently, the site is slow, with poor Google PageSpeed and GTmetrix scores. Your tasks will include:

- Optimize website speed
- Reduce load time to under 3 seconds
- Fix Core Web Vitals issues
- Optimize WP Rocket settings and other necessary plugins
- Ensure mobile + desktop performance improves

Key Focus Areas:
- Image optimization
- Code minification
- Server response time

Requirements:
- Proven experience in WordPress speed optimization
- Familiarity with WP Rocket and Core Web Vitals
- Ability to implement CDN solutions

Please share similar work you have done before.