That won’t do anything
He is going counterclockwise.
Try a different oil filter and put it on dry, just because it so to do.
Take the pressure relief valve and spring out and make sure it is clean and moving. Unscrew the plug on the back of the bore. But since you tried 2 different pumps with zero oil press then the pan may need to come off and check out the pickup.
I like to put some oil in a new oil pump just so it is wet. You don’t need to pack it full of grease or Vaseline, it doesn’t belong inside the engine anyway.