powercore 3 sense 20k cant charge macbook while in use

Hey, i have a powercore 3 sense 20k and when i try to charge my macbook pro 13inch m1 (while using the mac), not only it doesnt charge it up, but it even still drains.

I connect it via type c to type c with original apple charge cable.

Is that a problem with my powerbank? or is it just not capable of charging the mac while in use?