About 2 years ago I built some midrange 1440p computers with my 2 boys. With some guidance they ran every wire and touched every screw.
$900 Towers
CPU ——– AMD Ryzen™ 5 5600 6-Core, 12-Thread
MOBO —– ASRock B550M Pro4 Micro ATX
RAM ——- 32 GB (2 x 16 GB) DDR4-3200 CL16
Storage —- 2 TB M.2-2280
GPU ——– RX 6700 XT 12 GB
$1500 with desk / chair / peripherals / monitor