Brake issue and I am at a total loss.

Pics might help. There are many different faults that we might not see in pics.
Adjusters assembled wrong or switched left and right. The more you work the worse they get.
Grooves worn into backing plates at shoe contact pads.
Wrong wheel cylinder bore diameter or length.
If everything possible checks out OK we're back to the master cylinder.
Remand master cylinders are built from 40+ year old cores. To get a couple of bad ones in a row is possible.