You might just have to play in windowed mode. Right click the Sims 2 icon on your desktop, and click properties. Then in the 'Target' box, type in -w all the way at the end. It should look something like:
"C:\Program Files (x86)\Origin Games\The Sims 2 Ultimate Collection\Fun with Pets\SP9\TSBin\Sims2EP9.exe" -w. If you have issues with the screen size being too small in windowed mode, watch this:
https://www.youtube.com/watch?v=sbrnWQsgY-c