James Milner slotted home a first-half penalty for the Reds before Ibrahimovic levelled with six minutes remaining to secure a share of the spoils.
The draw extended United’s unbeaten run in the Premier League to 12 games but the Red Devils saw their nine-game winning streak in all competitions come to an end.
Speaking to Sky Sports, Ibrahimovic said:
‘We get one point, but we were not on the top of our game.
‘It was a hard fight, we were 1-0 down and we chased and, at the end, we got the equaliser.
‘We did simple mistakes. We were not feeling comfortable under the pressure of the opponent and I think we played the wrong way.
‘If we would have played like we did in the second half in the first half it would have been a different game.
‘We were more direct (in the second half). We did too many mistakes in our build-up (in the first half).’
Ibrahimovic now has 19 goals from 29 appearances this season and his latest effort helped close the gap on fifth-placed Manchester City to two points.
The former Sweden striker added:
‘We would have liked to win, of course, to close the gap even more, but we haven’t lost a game for a long time.’