Msc Thesis: Drowning in knowledge and ideas, whilst my supervisor is not answering my emails
You don't have to arrange a face-to-face meeting to meet your advisor face-to-face. Just go to his office when he's in and knock. Start with "Are you free?" If he says yes, you're gold. If he says no, ask him when you can come back.

It might sound pushy, but if you're not making progress at all, you're wasting time. Your time may not be as precious as his time, but it's still precious. Don't rely on email; arrange a meeting.