Nobody comes back from a serious injury and is the same after a month or even three months. You should play in the reserves; you get your muscle back and regain your match rhythm. Psychologically, you need to build your confidence back up and you hope there are no complications. Even in a settled side, it's hard.
Football has changed, and so has the relationship between the players on the pitch. Where once some players would try everything to distract opponents, now it's harder. There are TV cameras everywhere, which have much higher quality images than before. There are lip readers in studios working out what you are saying to each other.