Today I lost first leg of the cup (away): Oppo was slightly stronger (0.2)

He played 4-4-2, I played 4-5-1V.

Tactic: normal-mixed-short (started with mixed, but got no possession)-on
low-normal-mixed-off

I think, it was quite a troll-result, because my best player this week (rating 9,7 over all competitions) sufferd injury at 7'. The goal I conceeded was a freekick.

If he will stay with 4-4-2, do you think, I should stay with formation/tactic or is there a better idea for the 2nd leg at home?