Hello. With Ryzen Cpu's you have to have a G series cpu to have onboard graphics. The motherboard has an HDMI port but without a G series cpu you must have a graphics card.
G series examples: 3200g 3400g
The only variants of ryzen cpu's that have the G monicker are ryzen 3 (4core 8thread) and ryzen 5 (6core 12 thread)