Question ryzen 3 3200g slow fps when playing games

Jun 8, 2020
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So I'm a total newbie when it comes to building PC's and recently I built my first one, and its successful, the only problem I have is that when I tried playing a low demanding game the game was running slow and I'm trying to find the reason for it. sorry if I'm asking a typical newbie question, thank you in advance.

my PC specs :

cpu: ryzen 3 3200g ,
ram: 16gb,
motherboard: msi A320m-a pro max,
gpu : integrated vega 8 graphics .