It is true that the results of pre-season matches are not very important. But I think pre-season matches are important. Because in these matches, coaches test their squads. And before the season starts, we get an idea of the capabilities of the squads. In pre-season matches, we often see renowned teams losing. But losing in these matches gives an idea of the weaknesses of the squad. The coach can take the necessary steps to strengthen his squad. And that is why pre-season matches are very important for clubs that make big changes in their squads.
The result are usually not even a thing in pre season that’s why you see most top clubs losing out in pre season because most of the time it is new players and youngsters looking to break into the team that are usually tested or players who have been out for very long time to get match fitness for the start of a new season. For the manager it is very important if they are new to the club and it will be their first season there, their playing pattern is usually practice in preseason games but I tell you the result most at times do not transcend to the real game when the season starts, I have watched teams winning almost all their preseason games and end up losing their first league games. Reason been that the clubs they play against might not been in their best form compare to how they will turn up in real matches.
One Bundesliga team that seriously needs this preseason though is the Bayer Leverkusen team which has made significant changes to the club from the managerial position to the players. This period will give the players the idea of what the manager wants and also give new players the chance to blend with their teammates