allyspeidel If you want to keep the price down, this is capable of running all current Sims 4 content on ultra graphics settings with plenty of room to spare:
https://www.bestbuy.com/site/thermaltake-lcgs-vista-r66-gaming-desktop-amd-ryzen-5-5600-16gb-rgb-memory-amd-radeon-rx-6600-1tb-nvme-m-2-wifi-white/6603468.p?skuId=6603468
These two have a much faster graphics card and a processor that's a bit better too. Neither is necessary for Sims 4, but maybe you want extra power:
https://www.newegg.com/p/N82E16883151545
https://www.bestbuy.com/site/thermaltake-lcgs-quartz-i460-r4-gaming-desktop-intel-core-i5-13400f-16gb-ddr4-ram-nvidia-geforce-rtx-4060-1tb-nvme-m-2-white/6595230.p?skuId=6595230
This one isn't any better in terms of the specs, but it's a very good build quality and from a company that provides great support too, if these things matter to you:
https://www.amazon.com/Skytech-Nebula-Gaming-Desktop-13400F/dp/B0F62Y61L5/
There are a lot of very similar options in this performance category for around the same price or a little higher as well. So if you don't like any of these for one reason or another, let me know why and I'll try to find something that fits better.
And if you have more questions in general, please feel free to ask.