The best bleeder I have used is the one I constructed from a Mason jar and a venturi vacuum pump from harborfreight that hooks up to you compressor. You will also need some fittings and tubing. I enclosed it in a wooden box to keep it from getting kicked over. It will pull 25 INHG all day long with no pumping. Total cost was $20.

This pump. You only need the guts from it.

https://www.harborfreight.com/air-vacuum-pump-with-r134a-and-r12-connectors-96677.html