Ok I have to ask.
You did test the bulbs to verify they work and are the correct bulb for the socket?
And you did test the fuse in the fuse block.
And you did download your cars Factory Service Manual
And you did trace out the brake light cir on the wiring diagram in the FSM to see where it is gets it's feed, and where it goes through switches etc.
And you did trace with your volt meter from the battery to the brake light bulb.
The reasion I'm asking this in this way is none of us are there with you. So we are relying on you to do the steps any of us would do if we were there.
It's troubleshooting 101.
Also.... It's best to not create a new post but to continue in the same one so everyone can can see what has happened to date.