Thanks for wasting my time. I ask about fine tuning llama or mixtral and he answers with a nonsense, telling me that I don't want what I want.

No, you asked for a document completer, and got a suggestion. You're behaving like a typical XY problem asker, and getting angry when you don't get the answer you want. And they hardly "wasted your time", it took you maybe all of 10 seconds to read their comment trying to help you. What a weird behavior from you.

https://xyproblem.info/