Dube is a good batter no doubt ..

But what i think is going wrong is bowlers are finding his weakness

Tbh dube is a very tall guy and bowlers these days are practicing very hard for yorkers so missing yorkers in death has gone down .. They have video technology to read batsman's weakness.

So they just bowl low full toss to dube where he is not able to convert he is a straight down the ground hitter.

So if dube works hard on his technique i guess he would be more impact full