Because Ten Hag had a very difficult season at Man United, it was felt that he was considered a bad coach. And especially as Xabi's replacement, it would certainly be considered very bad if he couldn't deliver the best results.
Unfortunately, in this opening match, Ten Hag was actually embarrassed by being defeated by Flamengo U20, even though it was a friendly match.
Source: Full-time in Rio 90+4' | 5-1The defeat to the U-20 team in the preseason match was a very bad start... I thought that after his departure from Man United he would improve, at least a little, but it seems to have gotten worse. What else can we expect from Leverkusen under Erik ten Hag's leadership, he is too monotonous and too confident, he can't even beat the U-20 team, it's just unbelievable.
Bayer 04 Leverkusen football team played last match against Flamengo under-20 football team and that match was one sided because one team did 5 goals in this match and opponent team could do only 1 goal in this match which was very poor performance by Bayer 04 Leverkusen as players possession percentage was very low in this match and their passes were also low in this match and their shots were Very less in this match from which few were on target but opponent team performance was very well in all point of views because Flamengo under-20 team possession was at top because they carry football for the most of time .Many players of Bayer 04 Leverkusen football team need improvement because they are doing mistakes again and again.