I only manage to get a defensive tactic working if i play a 451. so i cna pack the midfield so as to not give the other team space, Then i can counter attack fast with runners from midfield.
The problem with a 532 is it allows the other teams full back alot of time to play deep crosses. try making your tactic 541. That way u can get you midfield four nice and narrow. Letting your fullbacks over lap like wingers. Lots of player making forward runs, but keep one cm defensive.
That should help both in defending and scoring goals.