First of all, PSG victory in the UEFA Champions League was not just luck, they also worked very hard to achieve all of that and they managed to prove themselves that they deserved the trophy this season, also judging by the team's outstanding performance, they performed stunningly especially in the final match against Inter Milan, they had the mental drive of champions to achieve a victory.
i agree with what you said that for psg to reach the final is not a matter of luck, it is purely their effort to be able to win their first ucl title. during this time they invested heavily in players, building a strong system, recruiting coaches, and improving their mindset and mentality, all of that is an effort to be able to win the trophy, and calling them 'lucky' to win the UCL title seems like insulting their efforts.