Sorry I forget that my english is colloquial and doesn't always translate well to players that don't speak english as a first language. I'll try to be clearer.
Yes, offside trap is a good idea vs long passing. A pass completion % of 84 or less means long passing unless one side is dominating the other. Turn on offside trap when you know your opponent is using long passing. Zonal if your defenders can't match his physical stats, man if you have a Q advantage or equal. I really hope you can understand why you lost this last game and learn from it.