@HannahLucaSims3 Sorry for the late reply. I can certainly help you pick out a new laptop if you want. Just let me know your budget and country as well as any other details that matter to you. It's also important whether you want the computer to be able to run Pets: some very new non-gaming laptops can run most Sims 3 packs fine but are right on the border of what Pets would require.
If you'd rather shop yourself, an Nvidia 1650 can run all packs together on ultra graphics settings. The newer 3050 is somewhat faster and not much more expensive, and the older 1660 ti (same age as the 1650) is even faster than that, but it's overkill for Sims 3. Any processor that accompanies one of these cards would be more than strong enough. For RAM, 8 GB is fine, especially if you don't plan on multitasking while you play. For storage, 512 GB would be nice, but you can certainly fit Sims 3 and all its associated content on a 256 GB drive if you're careful and especially if you're only using the laptop for gaming.
If you do find something you like, feel free to link a product page for a second opinion.
