Sims 3 64 bit keeps crashing

For the first two weeks or so of playing the sims 3 64 bit version, I had no problems with the game lagging or crashing. However, lately it has been crashing more and more, with today seeing a total of 7 crashes.I was looking to try to find what I was doing that would cause the crash, and I couldn't come up with any pattern. Sometimes, my game would lag, and the rainbow loading scroll would come up, but then I would be able to play the game until I decided to quit. Other times, I would boot up the game, and it would run perfectly smoothly until five minutes later it would crash when I would try to tell my sim to sleep or make pancakes. I have all the expansion packs installed and high end loft stuff. The household I'm playing with has two sims (a fairy and a witch), two cats, and a dog. I'm playing in Moonlight Falls. At first, I thought that it was the pets causing the problem, but I have had them the entire time with no problems before a few days ago. My MacBook is currently running Catalina 10.15.6, it has a 2.3Ghz intel core i7 processor, 16gb ram, intel iris plus 1536mb graphics card, and over 200gb still available. From my understanding, these specs are even above the recommended ones for the metal version. The crash reports I've gotten are quite lengthly, so I don't think I can copy and paste it here. My game is mod and cc free (frankly, because I don't know how to install them for the sims 3), and I am open to any suggestions as to what I can do. The one thing that I have noticed is that my game can stay on without crashing for a long time if I leave it paused, but then if I try to play it will crash within ten minutes with no lag beforehand warning me. Any thoughts?