>>12057400this is exactly the response you will get every single time from an actual professional on a specific topic
the professor knows his topic and he knows that for any other topic besides his subject he is not the instance to answer your questions
if you have a specific question ask the respective professional for it
the professor wont give advice on an topic that he is not expertised in
unless he is absolutely sure, a person of integrity will always respond with "i dont know" rather than giving some half assed answer that might not even be true and risk his reputation
dont feel bad about it, the prof was being as honest as possible
you will see personas and behaviour like this a lot in electrical engineering, no bullshit, very direct and very honest, you will eventually get used to it and learn to appreciate it