In many cases, cards fail to indicate that they're clickable.
Designers omit CTA buttons and only count on the user's experience or/and, hover effects.
In design, it's always a good practice to never leave things on user imagination.
Instead use an actionable button to prompt clickability and describe the action.

Make Inputs Self-Explanatory
Visual hierarchy is important in design because it boosts the user experience and leads the user attention

Pick The Correct Element
Visual hierarchy is important in design because it boosts the user experience and leads the user attention

How To Enhance Hierarchy
Visual hierarchy is important in design because it boosts the user experience and leads the user attention
