At first it seems that they are having trouble to score goals so I wasnt really expected that they coud score goal in the first half. The second half was quite different from the first half, they were more calm and wait for a good opportunity to score although they couldnt score either in the game
When players get back from international duty, take into account that they are still tired from all the playing and the travel back to their clubs. So it wasn't really surprising that some clubs were not scoring a lot of goals that was expected of them. The perfect example was Liverpool. Take into account the nationalities of the players who had international duties and how far they traveled.
Indeed however it is the coach responsibility to see wether his player is fit for the game or not. There is almost no point for the coach to force the player that isnt fit to play as he might ruin the whole strategy. It is just silly if the reason for their bad performance is because of the international duties
Do you seriously think that? I mean seriously. Let's take the Liverpool example. Coutinho and Firmino are both Brazilians, take into account how tired they are from play and travel in their international duties. How many miles did they travel, how tough were their opponents, etc... The same with Mane and the other key players. So now are you suggesting that Klopp not play these players? That would even be riskier for them.
Internationals ruin everything, I only ever see it invite nationalism and violence. It also causes issue for mainstream club football.