@cebart73 I've moved your post from the Mac forum to the General Discussion & Feedback forum as it's not Mac tech related.
I believe there are bug threads for all the issues you raise, have you looked in the bug forum, in the compiled list?
https://answers.ea.com/t5/Bug-Reports/bd-p/The-Sims-4-BugsYour first issue sounds like a corrupted installation which should be able to be fixed by repairing the game. If the objects missing are pack specific you will need to trash the pack file and force a re-download of that pack. For this you will need Mac specific instructions 🙂
https://bluebellflora.com/2020/06/17/repairing-sims-4-packs-in-origin/ 
