I’m really sorry about that, I hope it doesn’t happen again. If you’re okay with using mods, try NRaas Saver. It reminds you to save every 30 minutes (that’s a default setting, you can change this to be more or less frequent if you want), and every time you save, it saves the data to a different file. By default it cycles through four save files - so, at the first 30 minutes, you’ll be prompted to save your game as file A, and at 1 hour you’ll be prompted to save your game as file B, and so on. At 2 hours 30 minutes it’ll cycle back to file A again - though if you like you can increase or decrease the number of save files it cycles through. Hope this helps :>