He wasnt even playing as a cm so wtf is the problem?
Let's see. Coutinho has played three or four games:
First game he came in as a sub and looked really good combining with the team and should have had an assist
Second game he played on the right and was isolated. Not as a RW, but as a RM which isn't his position.
Third game today played at a water polo arena where almost every single player on the team couldn't control the ball and kept losing it. Still had a couple of great involvements and a shot hitting the bar.
Some perspective is needed here which you're lacking right now.
Why pay so much for him and then play him on the right? It's just wasting his talent.