Re: Why does SIMS 4 need to update 34.2 GB every time I want to play??
@SqueakyLemon36 Not using an admin account shouldn't prevent your apps from staying installed. But it's possible the computer is set up in a way that doesn't allow some data to be retained. That would be an unhelpful configuration even aside from this issue, so it's worth asking your husband exactly how he set up your account.
Also, you can have more than one admin account on a computer. I have three for testing purposes on one of mine, and it's perfectly fine. I would suggest at least temporarily setting your account as admin as well to see whether this problem disappears.
Please also list the location where Sims 4 is being installed. By that I don't mean what Steam tells you, although you can look there if you want. Instead, open a File Explorer window, click This PC in the left panel, and enter TS4_x64 in the search field in the upper-right corner. Let me know what file path is listed there; expand the window to the right if the entire path doesn't show with the default window size.