Core Web Vitals Analysis and Fix

I would like an expert who understands the upcoming Google update impact on core web vitals to help me run a diagnostic to undertake necessary changes to my site. I currently have 36 URLs showing as "poor" on mobile.

I will share URL with qualified candidates.

Please explain your knowledge of the updates and impacts to differentiate yourself from other freelancers and post a link to a site that you have worked on which passed all core web checks.