Hi!! I’m sorry to hear that..Can you please tell me where are you playing (PC or Android) and which version do you have. I’ll try to help you
Try quitting in-game instead of forcing it through the cellphone tabs. Go to the options, press the "quit" button and you'll be in the menu, and then just press the "quit" button again, the game will auto-save. After that you can shut down the game's app safely. And don't forget to turn off the energy saving mode to prevent any issues.