It seems like you don't like Erik Ten Hag's performance anymore, the season hasn't started yet and you're already criticizing him very harshly. Indeed, last season Man United's performance was bad because many defenders were injured, maybe you need to look again at why Erik Ten Hag's strategy didn't go according to plan last season.
In my opinion, you should give him at least one more season to prove his hard work in improving Man United's performance before criticizing him. Because in my opinion, in two seasons he managed to win two trophies in three finals, not a bad record. That is a clear progress that even the blind and deaf can see and hear, especially considering the condition of the team before his arrival.
In addition, you should also give him a chance in the Europa League (although not the Champions League) but it's still cool. I think Erik Ten Hag can take Man United further in the Europa League this season after seeing the pre-season and the match against Man City in the community shield.
How do think a manager who's spent two seasons already in big club like Manchester United still needs more time before he can prove himself? Why do you think it's too early to criticize Erik ten Hag when we've seen what's he's been doing at Manchester United in the last two seasons. I'm not a fan of the club but even from a neutral point of view, you should agree to the fact that the Dutchman have underperformed in his first two seasons and doesn't even deserve the contract extension he recently got.
This evening, Manchester United played their first league game of the season and from the performance of the team, there's nothing to show that ten Hag have worked on the team to improve. They had to rely on an 87th minute goal from a substitute to get all three points. Is that how he'll manage to win the UEFA Europa League trophy this season?