Now would be a good time to buy a Macbook Air, if one were so inclined, but 'now' is nearly always a bad time to build a PC. I had to build a system last year, so I went with an AMD Ryzen 5600G. The CPU has a graphics sub-system built in, with performance similar to an Nvidia GT-1030. Modest, but sufficient for light gaming. Ample for Factorio
Now that crypto is in a dip, it's time to pick up a second-hand RTX-2060. Or maybe an older GTX-1080. It's a matter of threading the needle between the latest crypto-crash, and China's annexation of Taiwan.
For a display, I'd be looking at a 4K, 27" panel with USB-Type C charging capability to run a laptop. One cable, and no need for a dock. I don't need the last word in colour fidelity, HDR or refresh rate, but it would be nice if it were as pleasant to use as an Apple retina display. Local dimming would be a plus.
I've always thought of the 16:9 resolutions as SD=480p, HD=720p, Full-HD=1080p. I don't think a name ever caught on for 1440p (other than QUWXSLGBTIA or whatever). Then we have 4K. There must be lots of people who think of 'HD' as 'the good one' and plonk down the cash. If you're sitting back on the sofa, and the telly is only 32", it's probably just fine. Save your money. For using as a monitor - up close - don't be getting a Veon :/