my brakes?????????

[sealw98]

I started off changing my rear brake shoes and I proceeded to bleed brakes, no brakes still, I checked front shoes just fine, so I changed the master cylinder got a nice brake pedal when truck is off drove it and could not stop, as far as I can tell the brake booster seems to work fine no air sounds and not a really stiff pedal.I have visually check for leaks nothing that I can see any help would be greatly appreciated thanks.