Graphics cards are hard to come by, and way overpriced when you can find one [a few years back I never thought I'd see a gaming graphics card go for over $2000]. That's expected to last through 2022, will likely get worse short term, with factories closing or reducing production because COVID, and more expensive as chip makers increase their prices.
Intel has long included GPUs in many of their CPUs, but for AMD it's more rare -- while AMD's been producing loads of these CPUs for laptops, they've only sold the desktop versions to OEMs until this August, when they were released to the retail market with little fanfare. Why does this matter? Because their GPU greatly outperforms Intel's versions.
There are however, caveats... NO onboard GPU will perform even close to a discreet or separate graphics card. AMD chose to go with the older Vega GPU architecture, rather than the newer, better versions in something like the XBox. AMD also used an older design, limiting the CPUs to PCIe 3 rather than the current v. 4, and cut the L3 cache by 1/2. That means that an AMD CPU with GPU is slower than its counterparts without the GPU. And finally, most all of the folks who write about this stuff consider the Ryzen 5700G overpriced by around $50, feeling that the cheaper Ryzen 5600G is a much better value.
There are plenty of reviews online with benchmarks and such so you can get a pretty good idea of what to expect gaming -- I just wanted to note that these CPUs are available now, since I hadn't really seen anything in the news. And depending on what games you play, they might be a solid choice if you're planning on something new or an upgrade, especially if & while you're waiting for the graphics card market to return to some version of normal.