Because "Euro Truck Simulator 2.to" and similar sites are often third-party portals, it is important to proceed carefully to protect your computer and your game save files.
Ensure the file version (e.g., v1.50) matches your current game version, or the game may crash. DOWNLOAD DO ARQUIVO – EURO TRUCK SIMULATOR 2.TO...
Check the game.log.txt file in your Documents folder to see why the game crashed. Because "Euro Truck Simulator 2
These are compressed folders. You must extract them (using WinRAR or 7-Zip) to find the .scs files inside. v1.50) matches your current game version
Make sure you aren't trying to run the game with too many conflicting map mods.
These are standard mod files (trucks, maps, graphics).