It is part of sport.
Misbah's shot could've gone over Sreesanth's head
Kapil Dev could've dropped the catch of King Viv
Klusner-Donal could've completed the run courtesy of an overthrow
It's part of the game, no need to go on calling others stupid just because your team didn't win.
But I'll tell you what's lucky,
1)The fact that NZ were even playing in Semi Finals was lucky
2) Kane Williamson nicked the ball vs South Africa but was given not out, that was lucky
3) Conditions aligned just as well for NZ bowlers strength was lucky in semi final & final
So don't talk about luck favouring England when NZ made it so far mostly based on luck.