What went wrong with my crust?

I made chocolate cheesecake using this recipe but the crust crumbled. I used graham crackers but followed the chilling time perfectly. Do you think it lacks butter or maybe I should’ve pressed more when setting the crust?

These are the instructions

For the base: 1 + 1/2 cup (180gms) crushed biscuits 3 tablespoons (37gms) melted butter

Recipe link:

https://youtu.be/4D9-gJgp4SI?si=InHStVF-CsBX5eKz