Try checking out gamers nexus reviews of prebuilts.

Also welcome to PC gaming. Nothing is ever good enough for pc gamers.

Buy from a reputable company, make sure stuff isn’t soldered onto the motherboard for some dumb reason, and chances are it’s okay

It’s generally because there’s no pre-built PC that is going to be as good bang-for-your-buck as one you build your own, so even the best prebuilt is already starting off with a poor footing.

A lot of people that perfect get in the way of good enough. You just need to know what’s good enough for you.

A lot of the criticisms people have for pre-built gaming PCs is the fact that the consumers of those machines don’t know enough to fix any problems. There’s a huge difference between knowing that there’s something wrong, and just suffering and silence.

Whatever you buy benchmark it with your favorite benchmarking tool and make sure you’re getting results roughly in the ballpark you expect. If not then you’re going to have to debug the system. Which I know you’re trying to avoid by getting a pre-built but you’re going to have to do it anyway

I’d say stay away from Dell/Alienware, mainly because all their stuff is proprietary which makes upgrading a pain in the ass. Besides that, just about anything else will probably be fine. If you find something that looks good to you, I’d recommend looking up what the company’s customer service is like, and if it seems satisfactory, there’s no reason not to get it.