Try to get ryzen 5600, it’s pretty good and goes cheap. 5500 should be mostly fine too, but it’s a little gimped on cache compared to 5600. Avoid cpus with G at the end, you don’t want/need to pay for integrated graphics.

Second thing would be graphics card. Try to find used radeon 5700, 6600 or something similar. They will be faster and won’t be as power hungry = you won’t need new power supply.

Also bigger ssd. Doesn’t need to be nvme, but having spinning drive for software is a pain these days. Sata SSD is fine.

Gimme cheap, simple and reliable EV with guaranteed 200km range and I’m sold. I don’t need bazillion of cameras inside and out, I don’t need glass roof, I don’t need 200kW of ridiculous power I would never use, I don’t need always online maps for a subscription fee and I don’t need 20" infotainment, neither I need 3 zone AC with ventilated seats and ballsack massage device, etc. I just want a Dacia of EV market.