Inside the obb folder, you need a folder named exactly after the game’s package ID.
: Some apps in the Play Store use similar names, like "Euro Truck Simulator" by PabloGame , but these are different games entirely and do not feature the same licensed trucks or map scale as the original PC version. How to Play the Official ETS2 on Android Safely euro truck simulator 2 obb file for android
For most ETS2 mobile ports, the package name is something like: Inside the obb folder, you need a folder