I have been doubting Bayer Leverkusen form ever since flamengo U20 team defeated them in a friendly match. It maybe a less important match to Bayer Leverkusen but it's says a lot about the team form and also exposes how weak Bayer Leverkusen looks from the inside.
I had the same thought and started doubting Leverkusen after they conceded 5 goals. Maybe we could have tolerated it if they hadn't conceded so many, but allowing 5 goals shows weak defense and an unconvincing attacking force. If Ten Hag truly wants to rebuild his reputation, he should prove himself in all of these pre season matches so that fans don't have to worry. But unfortunately, it seems like Ten Hag will continue to be doubted.