From the start, many people predicted that he would not be able to bring Leverkusen to achieve the success they had when they were coached by Alonso, at most he would only bring Leverkusen to stay at the bottom of the Bundesliga without really being able to compete for the championship title, just like he did to Man United in the past. so Leverkusen's decision to fire him was the right one because there was nothing he could do for the club, at most he would only make things worse for Leverkusen, so rather than regretting it, it would be better for him to be fired sooner.
There are still those who think Ten Hag can provide the best for Leverkusen because the Premier League situation is different from the Bundesliga. But in reality, he is still facing failure.
The decision by Leverkusen to choose Ten Hag at that time surprised many fans. And now his very quick dismissal also surprises many parties. That decision is good to be made quickly, but perhaps most people think he should be given at least half of the season. But Leverkusen is very firm in this regard.