After what Dortmund did last season, i don't have any hope in them to stop the dominance of Bayern munich in the bundesliga, Dortmund is a football club that are comfortable with not winning, Bayern were bad last season, but still won the bundesliga because Dortmund gave it to them. They have now sold Bellingham to Real madrid, so their team is now much weaker than it was last season, because of this i don't think Dortmund has any chance for the bundesliga next season. Bayern's dominance will continue, until another team that's not Dortmund improves and stops it.
Borussia Dortmund scout team without doubt is one of the best in the world because of the fact that they're always scouting out very young players who would go on to become global superstars.
However the club's constant decisions to always sell their best players in exchange for huge amount of financial profits is the reason why they're yet to win the German Bundesliga title for over 11 years now and that has also aided Bayern Munich to dominate the German league.
Borussia Dortmund is surely having one of the best system with mostly they are taking huge profit from the selling of players which is enough for them to stay at the best for the long time even they never interested to win trophies in Bundesliga and in Champions League, but they are keeping their finances as best as well which is amazing stuff from them business model like this is nothing new in European leagues, but many others are also having to win trophies and doing interesting stuff give them better place, but Borussia Dortmund is never going to change this way and having things favorable for them for decades as well.
In last season they were so close to win title but with their unpredictable style of play lady of luck also not give them favor and in last game they lost all chances for the win of title.