SEO and Reindexing Expert Needed

need SEO expoert to help me with below

Headings, Titles & Meta Descriptions
Recommended changes below are built around the keyword themes already used in our paid campaigns and search-term data, so paid and organic reinforce each other:

Please confirm exact current H1/H2 tags with the developer, as these were assessed from rendered page content rather than raw HTML.

Part 2: Reindexing Checklist
● Regenerate the XML sitemap so it reflects the new URL structure only (no dead/legacy URLs).
● Submit the updated sitemap in Google Search Console and Bing Webmaster Tools.
● Use the URL Inspection tool in Search Console to request re-indexing of the homepage and other key
pages after fixes go live.
● Confirm the 301 redirect map (old URLs → new URLs) is live before requesting re-indexing, so Google isn't re-crawling into more 404s.
● Once live and re-indexed, re-check the Dynamic Search