hey, you wont find a GPU that supports AMD CrossFire - because your APU has a TeraScale3 iGPU
best would be to buy a Ryzen 3 3100X + B450 MoBo + 16GB DDR4-3200CL16 + RX 5600XT (or wait for RX 6600XT)
you cold also go for the Ryzen 5 3600 route - would be a little more futureproof
PC: R7 2700X @PBO + RX 580 4G (1500MHz/2000MHz CL16) + 32G DDR4-3200CL14 + 144hz 1ms FS P + 75hz 1ms FS
Laptop: R5 2500U @30W + RX 560X (1400MHz/1500MHz) + 16G DDR4-2400CL16 + 120Hz 3ms FS