Graphene OS comes preinstalled with the browser Vanadium which uses duckduckgo as the default search engine. Since duckduckgo is not trade-free, as they show ads in their search results, I will give only 4 blocks.

Kuv tsis tau sim Graphene OS, tab sis los ntawm qhov lawv sau nws zoo li kev lag luam tsis muaj kev ua haujlwm rau cov xov tooj. ' GrapheneOS txhim kho kev ceev ntiag tug thiab kev ruaj ntseg ntawm OS los ntawm hauv qab mus rau hauv. Nws muaj lub ntsiav tawv, libc, malloc thiab compiler toolchain nrog ntau qhov kev txhim kho qis. Cov kev hloov no yog tsim los rau eliminate whole classes of serious vulnerabilities or provide meaningful barriers to exploitation. We avoid making changes without a clear rationale and we regularly work towards simplifying and replacing these low-level improvements.” (https://grapheneos.org/) to me they seem to completely get rid of google and provide an operating system that does not want to exploit its users for the sake of trade. The website does not have trackers and ads neither. Because of that I give them 5/5. Of course I could be wrong, so if you find any trades, let us all know here.