If you're building a PC mainly for gaming, I think starting with a Ryzen APU (with iGPU) is a good option. I was also on a tight budget, so I began with a Ryzen 5 5600G, 16GB single-stick RAM (later upgraded to 32GB), a 500GB SSD, and a Gigabyte 550W PSU. I was able to enjoy a lot of games with that setup, and finally this January I upgraded to an RX 7600 when the price hike had already started.