Catt accepts England were stifled in attack and starved of chances, despite plenty of willing endeavour, in the first Test loss to South Africa in Durban.
England were edged out 22-17 at Kings Park and face a tough task to level the three-match series at altitude in Johannesburg next week.
Former England international Catt said: "At the start of the second half we just didn't get any momentum, that go-forward we had in the first half.
"That is a little bit disappointing and something we can look at.
"We will address it with the boys and let's make sure we don't put ourselves in those situations again.
"With the attacking options we have got we would have liked to have had more ball in hand and I think that is something we have got to look at - why aren't they getting more ball."
England reshaped their back three with Harlequins full-back Mike Brown coming in for his first start in four years and Ben Foden moving to the left wing. Chris Ashton continued in to fill the right-wing berth.
Brown made some encouraging runs, Ashton found a gap in the first half and Foden claimed England's last-gasp consolation try, but otherwise it was a frustrating night for the trio.
Catt said: "Ash is working exceptionally hard, off his wing continually. Those chances haven't come for him just yet.
"But the back three of Foden, Brown and Ash - it is the first time they have played together.
"There will be more continuity next week. We can work on the things Browny and Fodes think we need to work on."
Brown was due to be assessed after taking a bang to thumb as Jean de Villiers burst through his challenge for England's second try. Centre Brad Barritt is the other injury concern after leaving the field in the second half with a facial injury.
England performed strongly in defence but relentless Springbok pressure paid off in the second half as tries from Morne Steyn and captain De Villiers put the hosts into a decisive lead.
Forwards coach Graham Rowntree said: "I actually think the set-piece was a good area for us going into the last quarter.
"But the last couple of scrums - they brought on some fresh 'cattle' and we struggled to deal with that.
"That is something we will be working on this week but my overall feel from the forward pack, I was very pleased, particularly with the lineout.
"I have to make a special mention for Joe Marler and Tom Johnson, I thought their workrate was phenomenal.
"There are areas to improve on, as always against these big teams, but we will improve in the week."
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