If you cannot find a compatible 100% save file, you can often use a built-in developer trick to unlock everything manually without external downloads:
This is crucial for repack users. A save file created on version 2024 might not work on a repack that is version 2021. Always check the read-me file included with the save game download. If the game crashes on load, it is almost always a version mismatch. fernbus simulator save game 100 repack