I need a real explanation of how a transformer model works. How does AI generate a response? Without saying the cat sat on the mat or river/money bank

If you ask AI you get the same thing every time .. Q is "what im looking for .. K is blah blah .. The cat sat on the mat ... river bank .. money bank .. I heard it all and none of these explanations actually tell you what a transformer really does it just uses a dry metaphor that never explains how the output is determined Then you ask claude and it tries to make u think its making arbitrary decisions and acting freely pretending that there is no script influencing its outputs .. i have come to my own wording for it but im just curious who also has a similar conclusion .. when you learn things