Could start with simple games like Tetris, solitaire, asteroids or breakout. Depends on what genre might appeal to the person. Sports, FPS, puzzle, there is such a variety. Is there a type that you might be looking for?
if you're a beginner you probably dont have the finger coordination to compete in fortnite. its probably not a good idea to spend a couple hundred on a top of the line system and more hundreds on the newest games you dont even know if you would like. start with free games, readily available anywhere on the internet. try the classics, try simple things. develop your skills before you spend any money where it wont pay off.