Q.Raised Bed
I put cardboard at the base of my raised bed, I am hoping this will keep the nutrients in and moles out. But I saw this week a mole path around it. Do you think my attempt failed?

Wire hardware cloth is a better and stronger deterrent then cardboard.
Even with a stronger barrier Moles can still invade your gardens.
These articles will help you.
https://www.gardeningknowhow.com/plant-problems/pests/animals/mole-control.htm
https://www.gardeningknowhow.com/edible/vegetables/vgen/raised-vegetable-gardens.htm