From the start, Manchester City and Real Madrid were quite the favorites to win the Champions League and now that Manchester City has been knocked out, of course Real Madrid is the most favored team to win the Champions League this season and I don't doubt that, they have everything to make it happen.
I don't know what kind of luck you're talking about. City had (including the first match) 210 minutes of pure playing time to prove that they were stronger, but they could not do it. By the way, if you remember the first game, it was really an accident that City scored three goals. Despite the fact that Real won in a penalty shootout, it was a natural victory for Ancelotti, which completely neutralized Guardiola's plan.
As Ancelotti said, this record must be broken and it was proven even though they played with total defense, but honestly I saw Madrid performance differently, the players were very focused and alert not to make mistakes.