defensive fm 26 tactic

I play 4-2-3-1...usualy positive or balanced and rarly cautional and having solid results...but there is problem that often my team conceide in 2nd half or in last 15 min left.

so my questio, does anybody have solid defensive tactic which could help me to close game with my nervs intact?

all tactics which people create are some ridicilous attacking


please, help

ps

is there any Italian left alive? bring us back Catenaccio, please