halleyz16 I apologize for the late reply; I've been away from the forums for a few days. The immediate issue is likely the same one that affects many players with Surface computers, and the fix is to change the two settings listed in this post from bibliomak:
Sims 4 Crashing/Freezing/Lag, Surface Pro 3/7 | EA Forums - 11836525
I also want to point out that your computer is very low on free space. With less than 5 GB free, Windows may struggle to maneuver even when it's not also running a demanding game. So please clear as much space as you can. I realize that may be difficult given how small the drive is, but getting to 15 GB or so free could help a lot.
You may need to clear more than 10 GB because Windows may assign some of the freed-up storage to the page file, so make sure to keep an eye on the stats. You can check by opening a File Explorer window and clicking This PC in the left panel; scroll down a bit if necessary.