Question about colours of materials and lightning

So i noticed that there is a difference between the colour of my game and the colour of the tutorials i watch.
For example , see the Roll a Ball game : this which looks more realistic
And mine :

So how can i make my game look the same?

Well camera perspective adds to realism, although I think in this case it looks like you have a different lighting - and maybe quality setting than the image you provided.

Realism for this ultra simple design isn’t going to improve the games quality - at all - but for future more complex designs - lighting and camera setup do play important roles in selling a more realistic look to the viewer.