Ten Hag has had a very difficult start and as expected he has received a lot of negativity about it, negative statistics are published where he is the second worst coach in the club's history who has played more than 100 matches, where the percentage of lost matches is about 28%, and bookmakers are giving low odds (about 4) that he has the highest chance of being the first coach to be sacked in the new season in the Premier League. So if the team does not start winning, anything can happen.
Ten Hag luckily gets very big support and patience from Manchester United because his performances are poor enough to be fired. This season starts like a nightmare for Ten Hag and Manchester United but overall statistics only shows his very bad management as a head coach. The odds shows big risk that Ten Hag will be fired in this season but it isn't first time we thought Ten Hag will be sacked. Eventually he succeed to stay in Manchester United but if he fails in management improvement, he will lose his job certainly in future.
Erik Ten Hag was almost fired last season because Man United's game did not improve and there was no development. However, because he was able to win the FA trophy he was not fired so he was given another chance to coach Man United in the hope that they would believe in the process. But unfortunately Erik Ten Hag in the three matches that have been played Man United's game has never developed, it is not impossible that Erik Ten Hag will not be long Ten Hag will be fired from Man United.
This is very clear when Man United's defeat against Liverpool showed how bad their structure is, and there is nothing we can expect from Erik Ten Hag. This is not just a matter of individual mistakes like Casemiro or Mainoo during the match against Liverpool. This is about the poor system built by Erik Ten Hag to make the team stronger and more solid.