I just wanted to let you know there are several things that can cause game corruption, and it won't be of any fault from the player. There are mods that will prevent this from happening. Also here is a link that will let you know what they are and how to avoid them.
https://sims.fandom.com/wiki/Game_guide:Avoiding_corruption
When I first started playing Sims 2, I made every mistake that could be made on that list.
Also when you feel like you would like to add a challenge to your gameplay, this person has a few that she is currently doing. I normally avoid challenges, but there is one in there that I am playing that I am really enjoying. She even has a list of suggested mods as well.
https://pleasantsims.com/