Complete Old WordPress Site Rebuild (WordPress Expert Coder Needed!)

I have old WordPress site which we recently updated but it's theme is not supported anymore. We don't want to lose our site SEO and data. We want to rebuild our wordpress site on new modern tech stack like FSE themes and custom build with minimal plugin use. We also want you to make sure core web vitals should be passed, and website should be lightening fast, response and SEO friendly. We want to completely replace our old plugins with less minimal code and new modern plugins. Please only apply if you are real WordPress Expert. Please type on very beginning of your proposal "Coder". Thanks and happy bidding!