What is the best gaming computer for the Sims 4

You don't need anything fancy for either of those. I was running TS4 on a Dell desktop (not a gaming computer) with a Core i5 and 8 GB of memory, and it ran fine. I have an HP Omen 25L gaming rig now, but it's overkill for TS4

Great thanks!! Cause I just wanna make sure my game doesn’t have an awful lag

I don’t think you need a full on gaming computer for Sims. You do need a little more than just a basic one. I’m using a Dell Latitude laptop with Intel i7 processor and 16GB of ram. It runs the game without any problems. I do have an upgrade to a dedicated Nvidia GeForce graphics card, though.