i remember trying 3-5-2 flat vs 4-5-1 before last year or something it didn't work maybe i didn't do the right tactics , and this year i made it this far in cl and cup by playing defense even if my tactic 4-2-3-1 is attacking one, i saw someone playing 3-1-3-1-2 against 4-5-1 and beat him good like 3-0 and 7-1 , what do you think about that formation ?