Best Desktop for TS4

@BabiGrim  Among the games you listed, only PUBG has higher requirements for ultra graphics settings than Sims 4, and not by all that much.  But if you liked the last Dragon Age and GTA, I'm guessing you'd like to play the next versions as well, sooner or later.  The issue is that the games are so far away from being released (probably about 2 years each), it's impossible to say what kind of hardware will be necessary for high or ultra settings, other than that the reqs will almost certainly be higher than what PUBG and TS4 demand now.

So there are two directions you could go.  One is to guess at what kind of graphics card you'd need in 2022 or whenever and buy it now.  The other is to get a card that's good enough now and figure you'll upgrade it in a couple of years, when you know exactly what you want.  The advantage of the second approach is that not only would you save money now, you'd likely end up with a better card the second time around, since technology is improving so quickly.  Of course, that only works if you're comfortable installing a new card or paying a computer shop to do it for you.

Either way, since you have $1,300 to spend and want to keep this computer for a while, it's worth paying a bit more for a stronger processor and other quality components (motherboard, CPU cooler, power supply: the kind of hardware you don't want to have to worry about).  That way, you can swap out the graphics card, or add more memory or another hard drive, and keep on going without having to replace anything else.

As an example, this Cyberpower custom build is $1,034 plus free shipping, or at least it is with today's deals.  (The deals change daily, but there's always something discounted, and this is just an example.)  It has an overclocked Nvidia 1660 Super for a graphics card, which is just a bit of overkill for your current games, but it should maintain 60 fps even in the most demanding parts of PUBG, at least if you're playing at the usual 1920x1080 resolution.  If you wanted, you could change the graphics card without needing to adjust anything else about this configuration.  The other hardware would support any card currently on the market, and that will almost certainly be true for several years.

http://www.cyberpowerpc.com/saved/1M39FD

Since you mentioned wanting to play a number of games and also have extra storage, you probably want at least a 500 GB solid state drive from which to run those games, or at least the ones that would benefit from being on an SSD.  (Sims 4 doesn't really, but others do.)  This build has a 2 TB mechanical drive too, because right now it's the same price as a 1 TB HDD.  But the drives can be swapped too.

Like I said though, this is just an example so you can see what you might be able to get for your money.  Please feel free to ask more questions, and let me know if you're looking for something different.  Given your budget, I went right to a custom build because although it's a bit more expensive, you get exactly what you want, and you know the quality of every single component included.