Just finished an SEO audit on a site - the findings read like a broken user journey map. Critical issues: hreflang tags pointing to non-200 URLs, missing return tags, no self-references. It's a multilingual setup that's an absolute mess. Canonical tags conflicting with hreflang, pointing to redirects - pure logic branch failure. Redirect loops and chains creating friction that kills any flow. Orphan pages sitting in the sitemap with zero internal links. Weak internal linking: pages with only one incoming link. Hero image lazy-loaded, wrecking LCP at 3.6s. High priority: duplicate content across pages, duplicate titles and identical H1s, thin pages under 500 words, H1/title keywords nowhere in the content. External link issues too. Technical warnings: hreflang inconsistencies, Google Tag Manager placed in the wrong spot, 404 not returning proper status, missing security headers, high Total Blocking Time from JS bloat. Performance reference: mobile 78, LCP 3.6s, TBT 410ms. Root causes are clear: misconfigured multilingual logic, weak site structure and linking, content duplication. Fix priority: hreflang + canonical + redirects first, then internal linking and orphan pages, then performance (hero image, JS), finally content cleanup. This isn't just a list of errors - it's a system design failure that breaks the journey at almost every node.