I would call sales and ask them to recommend a PC based on your budget, there is a lot of price fluctuation at the moment especially in mid-range GPU’s, memory, and storage.
It’s worth investing in a good motherboard, especially with Ryzen since forward compatibility is guaranteed until the new consumer DDR5 systems start shipping.
There are some decent X570 motherboards at a reasonable price.
Personally I would go for a system:
Ryzen 3600 (possibly 3700X)
B450 or X570 Motherboard
16GB 3200MHz+ CL14 Memory
500GB NVMe SSD (Gen 3 is sufficient)
RTX2060 (if around £270) or RX5700XT if budget allows
I’ve always found sales super helpful and patient.