In Dev tools, the function call that is in the script does not work in the console. Uncaught ReferenceError: (function) is not defined?

Question

Bots

Good afternoon. I decided to make a bot for cheating coins for one game in VK mini apps. And there was a problem: the function that is in the connected script is not called from the console, but if you hang up the call of this function on the button, then everything will work. Why so tell me please.
And the second question: I want to do the same, but on Node.js, and not from the browser. I copied the necessary requests that go to the server (Copy as a fetch), pasted, wrote a simple function that sends a request every second, it leaves, a response comes, but not at all the one in the browser. Tell me what I'm doing wrong.