The only reason Bangladesh won was because of their good bowling performance, Afghanistan was gradually moving towards victory. In this match, I consider Nasum Ahmed and Rishad Hossain to be the most aggressive bowlers for Bangladesh. Because these two bowlers put the most pressure on Afghanistan, because they eventually dismissed four batsmen of Afghanistan.
These two bowlers gave much less runs compared to the unique bowlers, so if these two bowlers did not perform well for Bangladesh, then of course Bangladesh would have lost.

If the bowlers did not do well, Bangladesh had no chance of winning. It was very difficult to win by giving a target of only 155 runs. Even then, Bangladesh won. This is definitely commendable.
The two Bangladeshi openers batted well. Even then, Bangladesh could not give a big target. Bangladesh lost their first wicket for 63 runs. Shamim and Jaker Ali needed to bat a little better.
The controlled bowling of Nasum and Rishad helped Bangladesh win a lot. Nasum took two wickets for just 11 runs in 4 overs. Rishad gave away 18 runs in 4 overs. In addition, Mustafiz took 3 wickets.