It was a very exciting match because PSG, unlike usual, would get defeated, PSG would usually always win in every match they faced. Kylian Mbappé could not play well because Borrusia Dortmund always controlled Kylian Mbappé's steps so that it was not easy for him to get the ball well until the match ended. PSG had difficulty scoring goals.
Before the match started, I also thought that Borrussia Dortmund would make it difficult for PSG and it turned out that actually happened in that match. And in the second leg I think PSG will also try hard to beat Borrussia Dortmund at home because PSG only lost by one goal in the first leg. But because their match is in the UCL, of course both of them will not be so easy to win because the second leg match is a super important match for them so they will give all their abilities in the second leg later.
I have predicted this before on Dortmund who will focus on the champions league and it turns out that Mbappe is not so much given space in running the ball so that Dorumnd does not have many dangerous threats, I really salute that Dortmund did focus on defense well in this first match and it was a good design, 1-0 for the first leg, PSG did not as many people imagined could roll Dortmund, it was Dortmund who did that, maybe this also happened because the first leg was at home to Dortmund, and the second leg was at PSG, maybe it would put different pressure on Dortmund, but I think Dortmund only needs to maintain a 0-0 match to qualify for the final.