luvminou What do you think of these two?
https://www.newegg.com/p/N82E16883360575
https://www.amazon.com/iBUYPOWER-Desktop-Computer-GeForce-Non-RGB/dp/B0DFLMKFGV
They both have an Nvidia RTX 4060 graphics card, which is significant overkill for Sims 3 and 4, but you might like the extra power for other future games. The other hardware is more than sufficient—the GPU would be the limiting factor in determining how well the systems run other games. (That's not true for Sims 3 or 4, where the game engine is the limit; neither is optimized for high-end systems.)
In case you're wondering, iBuyPower is a system integrator that does custom builds and makes prebuilt systems with the leftover parts. ABS is Newegg's in-house builder that uses components that aren't selling. So they're both using the same components you'd get if you built the computer yourself, meaning the systems are repairable or upgradable if you ever want or need to do so.
If you want a bit of an upgrade, this one has a 4060 ti, maybe a 15-20% increase in power, for $100 more:
https://www.bestbuy.com/site/msi-codex-z2-gaming-desktop-amd-r5-8400f-16-gb-memory-nvidia-geforce-rtx-4060-ti-1tb-ssd-black/6595683.p?skuId=6595683
As for the monitor, let me know more or less what size you want, and any other details that matter to you, and I'll list some suitable options.