Multilingual SEO should be diagnosed market by market, not as one language total.
Spanish in Spain and Spanish in Mexico can have different queries, competitors, result layouts, and conversion paths.
The same applies to AI answers and citations.
Map each market and language to the intended URL.
Validate hreflang and canonicals, then compare search demand, clicks, rankings, and AI visibility inside that market.
A global average can look stable while one market grows and another loses its landing pages.
Local evidence leads to local fixes.