how to turn the situation around when opposition are dominating possession?

[SbaDaKing]

Ok I manage Real Madrid and I have a very good team obviously and we always manage to score goals but we never get a cleansheet so I beat every team that comes by and when I play Barcelona my players turn to sunday league football players, Barcelona got 20 shots and I got just 3 shots in the first half and then the 2nd half I thought maybe it was my midfield so i subbed my two central mids for two defending mids but they continued with their barrage of attacks. In the end they had 32 shots and I had 5 shots (1 on target)
Anyone know how to deal with a situation like this? Do I need new players or must I change my tactic? What can I do?

 

[Dannyyy]

Formation/Players/Tactics/Player roles. If you still have the same players that you started with then start a new game and experiment with them in pre-season then go back to your proper game with the knowledge you have.

 

[Ben]

Probably your tactics. I always tweak my tactics, especially before big games, to suit the opposition.