PHP Website Cleanup for rehosting

I need my existing PHP-based business website cleaned up from an existing backup. After cleanup, provide a zip file so I can host it with a service provider.

Requirements:
- Restore website from public_html backup
- Clean up any errors or issues
- Maintain original design
- Add SEO friendly tags and make it mobile friendly

Ideal Skills:
- Proficiency in PHP
- Experience with website restoration and cleanup
- Familiarity with website hosting services