Kompany helped Bayern Munich get improve however he is not the first choice for this team and they were about to hire some other coaches instead of Kompany. As far as I saw in the news the management of Bayern Munich asked Pep Guardiola and he advised them to hire Kompany and you saw so far Pep was not wrong about this coach in Bayern Munich but still even his good performance doesn't mean he can win the title on Bundesliga with Bayern Munich but still Leverkusen is very close to them and if Kompany and his player make any mistake, Xabi Alonso is there to take their place.
Well, this is the pressure that Kompany has that makes him feel like he has a big responsibility to bring the giant Bundesliga team back to its best performance like before. On the one hand, he is a coach who does not have much experience and with Munich it is one of the very big tasks. So when it is possible that Munich fails again to win the Bundesliga title, maybe we can understand the failure more. Because it is not easy for a coach who does not have much experience to be able to bring Munich to win the Bundesliga title and also compete in the UCL.