I think that the most interesting games on October 8 are Germany v Romania and Turkey v Norway. Germany have been dominating their very easy group. They lost only once and won the rest of their five matches.
Germany lost the game under the old coach Loew. Since Flick is the coach, the game is much more dominant again and all games were won clearly. Therefore, I think that Germany will win the group very easily and it will be only an exception if they will not win a game in this group. The team is too strong for that. That's why I don't really find it interesting. Norway against Turkey, on the other hand, is interesting.
The respect that coach has in the team is just as important as his knowledge. Because once the faith is lost, you can have the best players in the world but it won't matter. They will play bad. This is particularly important when coaching a national team because a coach is not always with the players. A coach have few days before each period reserved for the national teams matches to put together players that rarely play together. 
Little depends on you, therefore, it makes no sense to strain too much (and there is no such amount of work) if your team performed successfully then you are a hero, if not - well, it's okay. Plus, famous coaches receive huge salaries in their posts, sometimes even significantly higher than their earnings in clubs.