Tuchel lost one final against PSG. Recently lost another one against Chelsea and this time to Leicester. I think this one will also lose. Especially the opponent of Manchester City. The team is stronger than Leicester and stronger than Bayern. And very eager to win the Champions League.
The both teams are eager to win the CL alike, not just City, Chelsea have won it before, just once though, but I'm pretty sure they'll be eager to make it two, Pep has won it twice, but that's a long time ago, Tuchel has never won it, but went as far as the final last season, everyone involved in the final needs this trophy, for pride, bragging right, reputation, to assert dominance etc.
City have dominated English football in the past decade, it's just the CL that has eluded them thus far, quite a lot of people believe that's the reason Pep was signed, he now has the opportunity to beat his chest as the only manager in City's history to have won every major trophy for them, it's going to be an enthralling final on the 29th, but I'm of the opinion that Pep will outwit Tuchel in the end.