I think Ten Haag was more focused on not getting more embarrassed so I didn't find it unusual to be honest. You can notice how United cannot really find a good mix of offense and defense. They can score if they open up but they are also prone for allowing many goals and we've seen that a lot in their previous CL matches this season. The same thing could have happened against Liverpool if Ten Haag decided a more offensive approach.
I think so too and it seems that Ten Hag managed not to embarrass Man United in the anfield because as we know many people think that Liverpool will embarrass Man United again at Anfield, but unfortunately Ten Hag seems to have learned from the failure in the previous match where he really did. pressured his players to be able to play pressing and defending so as not to concede goals and unexpectedly, in the end Man United managed to hold a draw and share points with Liverpool
It's truly unexpected, if Manchester United performed in the UCL like they did when holding Liverpool to a draw at Anfield, maybe they would have qualified for the round of 16 easily. Manchester United's success in stealing points at Liverpool's headquarters was beyond expectations, because they came to Anfield with a less than good record.
This draw was a good achievement for Manchester United, but not for Liverpool. Losing two points at home meant Liverpool had to swap positions with Arsenal. Now Liverpool have to settle for being in second place with 38 points, while Arsenal, who managed to beat Brighton, has collected 39 points.