What happened to Pep Guardiola and Manchester City this season? They turned out to be one of the worst teams in the Champions League and they are struggling to qualify for the competition next season. Sports like football are not like mathematics or science experiments in which the outcomes are predictable. A coach can acquire all the best players in the world and adopt the best strategy yet still have poor performance. Ange Postecoglou was just fortunate to win a trophy this season because Tottenham was one of the worst teams this season.
You're right man. I believe the same. It's true that statistics are useful from a moral perspective and provide important information, but they can't be used to base a result, because each match has different circumstances, making it difficult to accurately predict the outcome.
However, we can't deny that historical statistics are useful and can sometimes be relied upon. Furthermore, if you don't have any historical statistics your bet will be nothing more than a stroke of luck.