If you are having trouble navigating the official sites, you can try third-party repositories that aggregate past papers. These are often easier to search:
The GCSE Malayalam syllabus typically covers these three broad themes: malayalam gcse past papers
If you tell me your school uses or if you are looking for Malay (the language of Malaysia) specifically, I can find the exact link to those papers for you. Foreign Language (0546) - Cambridge IGCSE Malay If you are having trouble navigating the official