@_mevan51_ You don't need to play through Origin; just launch Sims 3 by double-clicking on the plumbob icon in Applications\The Sims 3. Seeing two green plumbobs in your dock when you open the game is normal, and one of them should go away right before the screen goes black and the introduction starts.
For the unhandled exception error, it could be a memory issue. Try launching TS3 immediately after restarting your computer, with nothing else running (not even Origin). If that alone doesn't help, try bypassing the launcher.
https://bluebellflora.com/sims-3-how-to-bypass-the-launcher-on-a-mac/
