After that we went into our first game against real people and beat them with 63:3 kills with two of our teammates abandoning early because our opponents were.. less prepared.
Score of 63:3 says you need to finish games or the other team just kept running into and you were playing people that didnt have ANY training.
Exactly, they kept pushing lanes and giving us free kills from minute 1, that's my point. It was our first game against human opponents and it probably was one of their first games against humans as well but there's some legwork you can do to give yourself an edge in noob games and not get horribly flamed to death every time. There's more than enough digestible info readily available after >10 years of dota.