Why my unity have low graphics and when I watch tutorial his unity is black and mine is white. Can someone help me?

Why my unity does not have good graphics when I watch tutorial people have black option panel and me the option panel is white?

@unity_VcBEzBtyhdHUUQ
The free version of unity has a white skin, whereas the paid versions give you a dark skin. You can make you game’s graphics look way better with this asset from the asset store:
https://assetstore.unity.com/packages/essentials/post-processing-stack-83912

here’s a video that explains how to use it and what all the options inside it mean:
https://www.youtube.com/watch?v=a0OQvWAPeuo&t=100s

hope it helps!