@DarkestPenguin I've had a few issues in my game since the most recent patch too. If you're not already familiar with it, I'd advise you to take a look at the list of reported bugs here:
https://answers.ea.com/t5/Bug-Reports/READ-FIRST-Compiled-list-of-reported-Issues/m-p/3445209#M223825
I've reported quite a few bugs myself recently 😔 there's something about an autumn update for me unfortunately. Seems appropriate for Halloween 😱.
I don't know if you've used it before but basically if you see a bug that looks like it matches your issue you can go to page 1 on the relevant bug report and click Me Too. You can also add a reply and give your information. It should bring up a bug template for you to fill in. If it doesn't, you can copy another one from the thread and paste it then clear the answers and add your own.
With your crashing issue, I'm on console (ex PC player) and it looks like you are on PC if I'm right? Here's the technical issues section for PC if you haven't used it before, you may find advice there. It could help to add a post there just about your crashing issue and a PC player may be able to assist you in fact I see a few similar posts on there with some tips to help. You'll also find a great troubleshooting guide:
https://answers.ea.com/t5/Technical-Issues-PC/bd-p/The-Sims-4
Hope this helps, good luck!