Thanks for all the good direction and advice everybody. Again, I will reiterate, I am an idiot when it comes to all of this.
I have opened the tongue on the trailer and checked the blue wire and it looks brand new. I can confirm that the reverse lights are working on my truck properly. I have checked all fuses and they are all good. I found the lockout key in my bag so that’s accounted for. When looking at the piece of paper in the key bag it shows a diagram of the roller pin and brake lockout. What mine looks like does not resemble what the diagram shows. Below is what mine looks like. I do not see a slot or a brake lockout that can be slid forward or how you could even use the key if needed. I am sure I am missing something.

I have a buddy that has all the devices needed who is going to come over and check the electrical pieces this afternoon.