The head coach was optimistic his team will give their best to bounce back in the third match, which they must win to keep the series alive.
Australia defeated Pakistan in the third ODI of the five-match series by 80 runs on Wednesday to take a 3-0 unassailable lead in the series.
Has scored 479 runs at 95.8 in his past six matches.
The opener laid the foundation for Australia, hitting 90 off 136 balls and forming a third-wicket stand of 84 with Peter Handscomb.
In three knocks against Pakistan, he has scored 359 runs. Most of the batsmen got off to good starts but failed to get going.
Regardless, there were technical deficiencies he had to rectify - in the 12 months in ODIs leading up to the Pakistan series, Finch - according to CricViz - had been averaging 11.14 to good length deliveries.
Finch, who also scored 116 in Australia's eight-wicket win in the first game at the same venue on Friday, put on a solid 209-run opening wicket stand with Usman Khawaja who scored 88 off 109.
However, runs were harder to come by in Abu Dhabi as Finch elected to bat first, with Australia finding it difficult to set the tone.
Australia won the first two matches by identical margins of eight wickets - both in Sharjah - and continued their dominance of a depleted Pakistan side who rested six of their key players in a surprise move, two months before the World Cup.
Cummins then took out Haris and Rizwan in the space of four balls as Pakistan found themselves in a spot of bother at 16/3. Adam Zampa picked a four-wicket haul while Pat Cummins accounted for three wickets as Pakistan were bundled out for 186 runs in 44.4 overs. I was struggling there, to be honest.
"We've been building up and doing the basics well", said Finch.
"I think we got to realise that we have players who are of the worldwide level; the chaps that are here are very good cricketers and will become very good cricketers".
"If we had have lost tonight, it would have been fairly and squarely my fault for batting so slow. We are trying to give bench strength more opportunities to try and play global games", ICC quoted Mahmood as saying.
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