Indeed, it must be admitted that in this friendly match, Bayern Munich could score so many goals and their opponents were not a weak team. Maybe at this time the strategy used by Thomas Tuchel is running quite smoothly but there will always be obstacles such as a player getting injured in the middle of a competition and I'm actually sure Thomas Tuchel can overcome this with the available options, but if there is no ammunition for a new player I will be doubt it.
In the champions league all the teams are unforgiving because it can be said that the champions league title is the dream of all football players around the world and even this title can be said to be better than the local competition title. Because Bayern Munich also has its own tradition of winning this title from the Bundesliga, which they have often won over the seasons.
Bayern Munich success in the Bundesliga and the Champions League in the forthcoming season may be impacted by the lack of a new striker. Although Thomas Tuchel mission is complex and involves both strengthening the team general strength and finding stronger attacking options, Dortmund prospective strength may make Bayern vulnerable. Recent friendly games show a strong attack but high level tournament success still depends on an experienced striker. Despite the team stability under Tuchel, winning the Champions League would necessitate strengthening their ranks to deal with the high level of competition.
Bayern Munich is still the strongest team in the Bundesliga. And they are much stronger than Dortmund. Bayern Munich's performances were somewhat erratic last season due to the club's internal problems. This is why Dortmund and Union Berlin have the chance to move to the top of the points table. However, the chances of seeing this in the coming season are very low. I have seen Bayern Munich's performance in friendly matches. The performance of the players is excellent. Tuchel has managed to create excellent chemistry between them. Bayern Munich would definitely be stronger if Harry Kane was in the team. Even so, without Harry Kane, Bayern Munich is a weak squad. Bayern Munich's attack is still quite strong.
My view is a little bit different. I think that chances are not necessarily low for Bayern Munich's performance to again be erratic as you called it. But I think that the chances are again very high that no other club could exploit Bayern Munich's weaknesses. If they can't solve their lack of a strong striker and begin the new season with only one experienced goalkeeper, I can definitely see how this could backfire again. But no worries, Dortmund will be too stupid again to win the title. RB Leipzig lost Nkunkuk and I think despite talking about a single player, this is tough for them. I am still hoping that some team is able to deliver an exciting fight not let Bayern win when they actually have one of their worst seasons again.
Even though Kane is one of the good enough strikers, it does not mean Bayern are weak when they fail to get Kane from Tottenham.
They are still one of the favorite clubs even with their dominance that will not change even without Kane in the squad.
Their new players showed quite good things in some friendly matches conducted, on the other hand of course Tuchel will also do some things that will be different from Bayern last season.
But this is only talking about the Bundesliga because Bayern's domestic competition is still Bayern although with the current squad I doubt in the Champions League but for domestic competitions I am still very confident with them.