Pumping trouble

Sm

So part of my BF journey has me pumping to stimluate my supply. I have a medela maxi swing electric breast pump. I paid a fortune for it. Bit it seems to not pump efficiently.. my hakaa collects more and I always end up manually hand expressing after a pump session to "empty"out my boobs

Are all electric pumps like this?

Or is it likely my supply is still low? (which worries me as we are weaning off formula)