Gold is heavy, physical, difficult to move from one place to the other. The so-called Physical Supply Chain is what makes Bitcoin " better".
As you can keep your bitcoin easily with you in whatever quantity you want. In times of disruption, you can move anywhere in the world with your whole capital. Although gold has value as a precious metal, I do believe that Bitcoin outperforms Gold as a safe haven. But if you look at building a portfolio I believe diversifying is key and both gold and bitcoin are good to have in there.
Covered it in today's video (also previous videos) https://youtu.be/e2_L7YHS-bU Explaining Gold vs. Bitcoin