So yeah, there are a few options to upgrade:
-Ryzen 5 1600 is a fine CPU (maybe a bit old), you could upgrade it, but shouldnt be a huge difference
-2x8 GB RAM-Sticks (at least 3200MHZ, because thats just faster)
-RX5600 or RTX2060 (maybe Super if you can afford it), but you should have at least a 450-550W PSU
-Gigabyte B450M is a decent mainboard, you dont need to upgrade it