I agree that you can't just say everything is luck but he's clearly had almost every key moment go his way. That isn't down to just luck because you aren't consistently lucky, you make your own and Madrid do that by winning the tournament and having super confidence even if they lose a goal.
As for Allegri, it's a pure fantasy position for him as a coach. When Pjanic and Mandzukic walked around on one leg against Madrid he didn't have one fit genuine attacker to choose from (unless you consider Cuadrado one), let alone Bale, Morata and Asensio. Yesterday it was Vazquez instead of Morata but the same. When we played Barcelona we had Llorente, Pereyra and a very young Coman.
Bale is a world class player and it's not a coaching masterstroke, he sits on the bench and is used as a €90m supersub. Now he's going to grumble until they sell him because there isn't a club in the world where players like that will stay sat on the bench. World class players score goals like that, it's not as if it's something out of the coaching manual, it's a moment of genius. Just like they don't teach keepers to throw the ball away.