If Ten Hag has started to realize this at Manchester United, of course he himself knows what he actually has to do before the season actually starts. Because in terms of time, it is still possible for Manchester United to make more evaluations and better strategies to be able to start next season as well as possible.
Maybe I'm one of the few people who don't believe in Ten Hag anymore but I confess the Ten Hag condition of that time that it's really hard to improve the team's performance to be maximum when some players have to get injured. And now Ten Hag has begun to act heartily in terms of bringing in new players and making a major upgrade on every line that was considered weak last season.
Changing the team to get the best results takes time and this is an effort by Man United management to give Ten Hag a last chance to prove that he can take the team up to a higher level.
And apart from that, losing in the pre-season match also didn't harm Manchester United even though it could make the mediocre team feel happy and enthusiastic enough to start next season in the Premier League.
As far as yesterday's pre-season matches are concerned, they don't really need to be taken seriously. It's just a regular match to test how strong a young player or a new player is coming in this season, so there's no need to assume if it's a failure.