Paul Cook oversaw his third successive win as Pompey boss but insisted: We should have made life easier for ourselves.
The Blues boss watched as his side stretched their pre-season run to five games without defeat by beating National League Woking 2-0.
For most of the 1,562 strong crowd in attendance at the Kingfield Stadium, the game represented a comfortable evening for the visitors following first-half strikes from triallists Gareth Evans and Matt Clarke.
But Cook felt the Blues’ inability to clinch a third goal invited the hosts on to them in a second-half display that failed to reach the heights of an impressive opening period.
He said: ‘If we would have gone on and got the third goal, the game would have been over as a contest.
‘Away from home sometimes the third goal can be important, so I didn’t feel we were anywhere near good enough in the second half.
‘That’s not a criticism of the players or anything like that.
‘We just had an appetite for the game on Tuesday (a 2-1 win against Coventry) that was a there for everyone to see.
‘I just didn’t see the same appetite for the game tonight in the second half.’