I find it a bit odd that people want Alonso to consistently produce good results (winning trophies) before he can be called a good coach. I mean, if his achievement with Leverkusen is just "lucky", then how would you judge his competitors? I guess every manager is terrible nowadays, which means a club should pick their coach randomly if that is the case. No point analyzing a coach's profile as long as they can get a bit lucky once in a while. He's probably not the next Guardiola, he won't have as much leeway with buying players, and he doesn't have to be one. Then again I guess he doesn't care what people think of him, especially if the club and the fans are happy with him.
Flashback about Xabi Alonso, he is a former player who has a background in playing in several leagues with elite clubs in each of his careers as a professional football player. Before pursuing his career in the world of coaching, Alonso was trained by several coaches who had big names and reputations. Most recently he had a career as a footballer at Bayern Munich, and has a lot of knowledge from different coaches. From there, Xabi Alonso has the knowledge to pursue a career as a football manager or professional football coach. BTW, I said this from several sports newspaper reviews I've read. Correct me, if I'm wrong. That's why, Xabi Alonso has an interesting record in his coaching career.
In short, in less than two seasons with Leverkusen, he was able to present his best and show his talent when managing Leverkusen starting from the relegation zone and was successful in his second season with an impressive record. So, it would be very natural if many people speculate or want this Spanish coach to remain consistent in winning trophies in the new season with his team. That's why it is hoped that Leverkusen will continue to give their best so that the Bundesliga remains competitive like last season. Even though I agree with you, it will be very difficult for Alonso to continue to appear consistent, let alone record the records he achieved with his squad. however, it might happen. Moreover, several strong rival teams are coached by young coaches. one of them, Bayern Munich and Dortmund are also handled by new and young coaches.
Talking about luck, it's true that Bayer Leverkusen was very lucky last season. However, this effort is not without reason. I don't really agree with the idea of coincidence, after all everything is done with paper work, teamwork games, and coaches who dedicate their energy to their team. Xabi Alonso was ultimately successful, at least in his career as a professional coach and coached Leverkusen. So, will Leverkusen appear even better, or will they have tough competition in the new season? In fact, we will never know before the new competition is rolled out.