The Sims 3 quit unexpectedly (64-bit)

@elimaximoff  Are you playing an existing save, as in, one that you played before installing Late Night?  What world does it take place in?

Please also list the other packs you currently have installed as well as the full specs of your Mac: everything under About This Mac except for the serial number.

No, I made a new save and I'm playing in Bridgeport. I have World Adventures, Generations, Pets, Supernatural, Seasons, and Island Paradise.

MacBook Air (Retina, 13-inch, 2020)

Processor 1.1GHz Dual-Core Intel Core i3

Memory  8 GB 3733 MHz LPDDR4X

Graphics Intel Iris Plus Graphics 1536 MB

@elimaximoff  Please try turning down the lighting and tree detail settings to the minimum.  Do so at the Main Menu, then quit to desktop before loading a save.  This does help a number of players with hardware like yours.

However, the issue here may be the Pets expansion in combination with Bridgeport.  Anecdotally, players see a lot more crashing when playing in Bridgeport with the Pets EP, even if their sims don't actually own pets.  It may have something to do with pet routing in apartments, although I can't be sure because I haven't been able to reproduce it.

Point is, try playing in a new save in Sunset Valley or Appaloosa Plains and see how it runs.  You can also try playing in Bridgeport without Pets.  To "uninstall" a pack, all you need to do is open a folder called "The Sims 3 Packs," which will be inside either Applications or Users > your username > Applications, and move the folder for a particular pack to the desktop.  Pets is EP05.

To be clear, you should never remove an expansion from an existing save: that can corrupt the save beyond repair.  But there's no harm in starting a new save without certain packs, and to add Pets back, all you'd need to do would be to move the EP05 folder back to the Packs folder.