Audit and optimize a page's on-page SEO

Audit the on-page SEO of the following page and give me specific, implementable fixes — not generic advice.

Page content/code: [paste the page's rendered content, or its component/HTML source]
Target primary keyword/topic: [describe what this page should rank for]
Page type: [blog post / landing page / product page / documentation]
Site/framework: [e.g. Next.js App Router with the Metadata API]

Check and report on each of these, with a pass/fail and a specific fix if it fails:
1. Title tag: length, whether it includes the target topic naturally, whether it's unique on the site
2. Meta description: length, whether it's compelling and accurately describes the page (not just keyword-stuffed)
3. Heading structure: exactly one H1, logical H2/H3 nesting, whether headings reflect actual content sections
4. URL structure: is it short, descriptive and free of unnecessary parameters
5. Internal linking: does the page link to related pages with descriptive anchor text (not "click here")
6. Image alt text: present and descriptive, not missing or keyword-stuffed
7. Structured data: what JSON-LD schema type(s) would genuinely apply to this page (e.g. Article, FAQPage, BreadcrumbList, Product) and whether it's present and valid
8. Content structure: does the page actually answer the target topic thoroughly, or is it thin/generic
9. Canonical tag and any obvious duplicate-content risk

For each issue found, give me the exact corrected code/text — not just "improve your title tag." At the end, give me a prioritized list: which 3 fixes will matter most.

Do not suggest keyword stuffing, hidden text, or any other manipulative tactic — flag if my current content relies on any of these.